Difference Between Enquiry And Inquiry

Enquiry	Inquiry
Enquiry means to ask a question.	Inquiry is a formal investigation.
The prefix ‘en’ comes from French.	The prefix ‘in’ comes from Latin.
Enquiry is a request for truth, knowledge or information.	Inquiry is an investigation into something.
Enquiry is preferred in British English.	Americans are more comfortable with the inquiry.
For example: Abhishek writes an Enquiry Letter.	For example: I immediately instituted an inquiry to ascertain the facts in the case.