diff --git a/htdocs/langs/en_US/companies.lang b/htdocs/langs/en_US/companies.lang
index cfc8976a467..86970b1f082 100644
--- a/htdocs/langs/en_US/companies.lang
+++ b/htdocs/langs/en_US/companies.lang
@@ -152,7 +152,7 @@ DefaultDiscount=Default discount
 AvailableGlobalDiscounts=Absolute discounts available
 DiscountNone=None
 Supplier=Supplier
-CompanyList=Companies' list
+CompanyList=Companie's list
 AddContact=Add contact
 Contact=Contact
 NoContactDefined=No contact defined for this third party
@@ -185,10 +185,10 @@ ShowCompany=Show company
 ShowContact=Show contact
 ContactsAllShort=All (No filter)
 ContactType=Contact type
-ContactForOrders=Orders' contact
-ContactForProposals=Proposals' contact
-ContactForContracts=Contracts' contact
-ContactForInvoices=Invoices' contact
+ContactForOrders=Order's contact
+ContactForProposals=Proposal's contact
+ContactForContracts=Contract's contact
+ContactForInvoices=Invoice's contact
 NoContactForAnyOrder=This contact is not a contact for any order
 NoContactForAnyProposal=This contact is not a contact for any commercial proposal
 NoContactForAnyContract=This contact is not a contact for any contract
@@ -218,7 +218,7 @@ ContactPublic=Shared
 ContactVisibility=Visibility
 OthersNotLinkedToThirdParty=Others, not linked to a third party
 ProspectStatus=Prospect status
-PL_NONE=Aucun
+PL_NONE=None
 PL_UNKNOWN=Unknown
 PL_LOW=Low
 PL_MEDIUM=Medium
diff --git a/htdocs/langs/en_US/compta.lang b/htdocs/langs/en_US/compta.lang
index 74dba2259aa..978d3a33a33 100644
--- a/htdocs/langs/en_US/compta.lang
+++ b/htdocs/langs/en_US/compta.lang
@@ -78,15 +78,15 @@ ByThirdParties=Bu third parties
 ByUserAuthorOfInvoice=By invoice author
 AccountancyExport=Accountancy export
 ErrorWrongAccountancyCodeForCompany=Bad customer accountancy code for %s
-SuppliersProductsSellSalesTurnover=The generated turnover by the sales of suppliers' products.  
+SuppliersProductsSellSalesTurnover=The generated turnover by the sales of supplier's products.  
 CheckReceipt=Check deposit
 CheckReceiptShort=Check deposit
 NewCheckReceipt=New discount
 NewCheckDeposit=New check deposit
 NewCheckDepositOn=Create receipt for deposit on account: %s
 NoWaitingChecks=No checks waiting for deposit.
-DateChequeReceived=Cheque reception input date
-NbOfCheques=Nb of cheques
+DateChequeReceived=Check reception input date
+NbOfCheques=Nb of checks
 PaySocialContribution=Pay a social contribution
 ConfirmPaySocialContribution=Are you sure you want to classify this social contribution as paid?
 DeleteSocialContribution=Delete a social contribution
@@ -100,7 +100,7 @@ SeeReportInInputOutputMode=See report <b>%sIncomes-Expenses%s</b> said <b>cash a
 SeeReportInDueDebtMode=See report <b>%sClaims-Debts%s</b> said <b>commitment accounting</b> for a calculation on issued invoices 
 RulesResultDue=- Amounts shown are with all taxes included<br>- It includes outstanding invoices, expenses and VAT whether they are paid or not. <br>- It is based on the validation date of invoices and VAT and on the due date for expenses.
 RulesResultInOut=- Amounts shown are with all taxes included<br>- It includes the real payments made on invoices, expenses and VAT. <br>- It is based on the payment dates of the invoices, expenses anf VAT.<br>
-RulesCADue=- It includes the clients' due invoices whether they are paid or not. <br>- It is based on the validation date of these invoices. <br>
+RulesCADue=- It includes the client's due invoices whether they are paid or not. <br>- It is based on the validation date of these invoices. <br>
 RulesCAIn=- It includes all the effective payments of invoices received from clients.<br>- It is based on the payment date of these invoices<br>
 VATReportByCustomersInInputOutputMode=Report by the customer VAT collected and paid (VAT receipt)
 VATReportByCustomersInDueDebtMode=Report by the customer VAT collected and paid (VAT rate)
diff --git a/htdocs/langs/en_US/install.lang b/htdocs/langs/en_US/install.lang
index 24cadac8a45..963ae499803 100644
--- a/htdocs/langs/en_US/install.lang
+++ b/htdocs/langs/en_US/install.lang
@@ -145,10 +145,10 @@ NextStepMightLastALongTime=Current step may last several minutes. Please wait un
 # upgrade
 #########
 MigrationFixData=Fix for denormalized data
-MigrationOrder=Data migration for customers' orders
-MigrationSupplierOrder=Data migration for suppliers' orders
+MigrationOrder=Data migration for customer's orders
+MigrationSupplierOrder=Data migration for supplier's orders
 MigrationProposal=Data migration for commercial proposals
-MigrationInvoice=Data migration for customers' invoices
+MigrationInvoice=Data migration for customer's invoices
 MigrationContract=Data migration for contracts
 MigrationSuccessfullUpdate=Upgrade successful
 MigrationUpdateFailed=Failed upgrade process
diff --git a/htdocs/langs/en_US/mails.lang b/htdocs/langs/en_US/mails.lang
index d4f9b2dfbc7..5e262675c27 100644
--- a/htdocs/langs/en_US/mails.lang
+++ b/htdocs/langs/en_US/mails.lang
@@ -79,7 +79,7 @@ MailingModuleDescContactsCategories=Third parties with emails (by category)
 MailingModuleDescDolibarrContractsLinesExpired=Third parties with expired contract's lines
 
 LineInFile=Line %s in file
-RecipientSelectionModules=Defined requests for recipients' selection
+RecipientSelectionModules=Defined requests for recipient's selection
 MailSelectedRecipients=Selected recipients
 MailingArea=EMailings area
 LastMailings=Last %s emailings
diff --git a/htdocs/langs/en_US/orders.lang b/htdocs/langs/en_US/orders.lang
index 3c330042b21..085d72d3029 100755
--- a/htdocs/langs/en_US/orders.lang
+++ b/htdocs/langs/en_US/orders.lang
@@ -14,12 +14,12 @@ NewOrder=New order
 ToOrder=Make order
 MakeOrder=Make order
 SupplierOrder=Supplier order
-SuppliersOrders=Suppliers' orders
-SuppliersOrdersRunning=Current suppliers' orders
+SuppliersOrders=Supplier's orders
+SuppliersOrdersRunning=Current supplier's orders
 CustomerOrder=Customer order
-CustomersOrders=Customers' orders
-CustomersOrdersRunning=Current customers' orders
-CustomersOrdersAndOrdersLines=Customer orders and orders' lines
+CustomersOrders=Customer's orders
+CustomersOrdersRunning=Current customer's orders
+CustomersOrdersAndOrdersLines=Customer orders and order's lines
 OrdersToValid=Orders to validate
 OrdersToBill=Orders to bill
 OrdersInProcess=Orders in process
@@ -71,8 +71,8 @@ LastModifiedOrders=Last %s modified orders
 LastClosedOrders=Last %s closed orders
 AllOrders=All orders
 NbOfOrders=Number of orders
-OrdersStatistics=Orders' statistics
-OrdersStatisticsSuppliers=Supplier orders' statistics
+OrdersStatistics=Order's statistics
+OrdersStatisticsSuppliers=Supplier order's statistics
 NumberOfOrdersByMonth=Number of orders by month
 AmountOfOrdersByMonthHT=amount of orders by month (net of tax)
 ListOfOrders=List of orders
@@ -137,4 +137,4 @@ AddDeliveryCostLine=Add a delivery cost line indicating the weight of the order
 PDFEinsteinDescription=A complete order model (logo...)
 
 # NumRef Modules
-MarbreNumRefDesc=Renvoie le numéro sous la forme %syymm-nnnn ou yy est l'annee, mm le mois et nnnn un compteur sequentiel sans rupture et sans remise e 0
+MarbreNumRefDesc=Returns the number as %syymm-nnnn where yy is the year, mm the month and nnnn a sequencer seamlessly and without replacement to 0