tent flap vs rainfly

tent flap and rainfly both are nouns.

Word	Noun	Adjective	Verb	Adverb
tent flap	Yes	No	No	No
rainfly	Yes	No	No	No

As nouns, tent flap and rainfly are synonyms defined as:

tent flap and rainfly: flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent

Other synonyms of tent flap include fly, fly sheet, tent-fly.

tent flap (noun)	rainfly (noun)
flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent	flap consisting of a piece of canvas that can be drawn back to provide entrance to a tent