Question

what does red wavy and green wavy lines in a document indicate ​

Answer 1

Answer:

By default, Word automatically checks your document for spelling and grammar errors, so you may not even need to run a separate spelling and grammar check. These errors are indicated by colored wavy lines. The red line indicates a misspelled word. The green line indicates a grammatical error.

Answer 2

Red wavy lines means that any word has been miss spelt.

and green wavy line represents grammatical error.