flycatcher vs true flycatcher

flycatcher and true flycatcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
flycatcher	Yes	No	No	No
true flycatcher	Yes	No	No	No

As nouns, flycatcher and true flycatcher are synonyms defined as:

flycatcher and true flycatcher: any of a large group of small songbirds that feed on insects taken on the wing

Other synonyms of flycatcher include Old World flycatcher.

flycatcher (noun)	true flycatcher (noun)
any of a large group of small songbirds that feed on insects taken on the wing	any of a large group of small songbirds that feed on insects taken on the wing
large American birds that characteristically catch insects on the wing