fly sheet vs tent-fly

fly sheet and tent-fly both are nouns.

Word	Noun	Adjective	Verb	Adverb
fly sheet	Yes	No	No	No
tent-fly	Yes	No	No	No

As nouns, fly sheet and tent-fly are synonyms defined as:

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

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

fly sheet (noun)	tent-fly (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