What is the difference between spelling and grammar check?

Answer 1

In computing, a spell checker (or spell check) is an application that flags words in a document that may not be spelled correctly. Spell check mainly focuses on the correctness or proper way of how a word is spelled whereas, grammar check (or grammar checker is an application that flags sentences or the structure of the sentence and how it is written or typed. It usually involves proper punctuation, word agreements and proper use and placement of nouns, adjectives, adverbs, verbs, etc. It points out why the sentence or sentences is in disagreement according to language rules and format. It basically focuses on the structure of a sentence.