Differentiating Professional Letter This course is part of the Polytechnic discipline of the Bangladesh Board of Technical Education. Diploma in Computer Engineering / Technology, Diploma in Civil Engineering / Technology, and Diploma in Electrical Engineering / Technology, All are in different semesters of technology.
Differentiating Professional Letter
Letters are a form of verbal and written communication, which contain information or a message, sent by one party to another, to convey the message. It is sent by one party to another, to provide certain important information. There are two types of letters, i.e. formal letters and informal letters. The formal letter is written for business or professional purposes with a specific objective in mind. It uses simple language, that can be easy to read and interpret.
On the contrary, informal letters are written to friends and relatives for personal communication and use a casual or emotional tone. The article excerpt presents all the important differences between formal and informal letters in a detailed manner.

Definition of Formal Letters
A formal letter is any letter written in professional language, with a prescribed format for a formal purpose, i.e. it can be a recommendation letter, inquiry letter, complaint letter, cover letter, and so on. All business letters are formal, but vice versa is not possible. Such letters are used for a variety of reasons like a formal invitation, proposal, reference, making a complaint or inquiry, or applying for a job. While writing a formal letter one should keep in mind the following things:
- It should be in the specified format.
- It should avoid the use of unnecessary words.
- It should be straight to the point.
- It should be relevant and objective.
- It should be complex and thorough.
- It should be polite, even if it is a complaint letter.
- It should be free from any mistakes, i.e. grammatical or spelling.
There are three types of formal letters, i.e. business letters, letters for outlining civic problems, and job applications.

Definition of Informal Letters
An informal letter is a letter written to someone; we know fairly well. The letter can be used for some reasons like conveying a message, or news, giving advice, congratulating the recipient, requesting information, asking questions, etc. It is a personal letter, written to whom you are familiar with, like friends, siblings, parents, or any other close one. There is no specific format prescribed for writing this letter.
While writing an informal letter, one can afford to be friendly and make use personal or emotional tone. Slang or colloquial terms, codes, abbreviations, etc. can also be used at the time of writing it, depending on the familiarity with the recipient.

Details about Differentiating Professional Letter – English Grammar :
