tree swallow vs swallow

tree swallow and swallow both are nouns.

Word	Noun	Adjective	Verb	Adverb
tree swallow	Yes	No	No	No
swallow	Yes	No	Yes	No

As nouns, swallow is a hypernym of tree swallow; that is, swallow is a word with a broader meaning than tree swallow:

tree swallow: of Australia and Polynesia; nests in tree cavities
swallow: small long-winged songbird noted for swift graceful flight and the regularity of its migrations

As nouns, swallow is a hypernym of tree swallow; that is, swallow is a word with a broader meaning than tree swallow:

tree swallow: bluish-green-and-white North American swallow; nests in tree cavities
swallow: small long-winged songbird noted for swift graceful flight and the regularity of its migrations

tree swallow (noun)	swallow (noun)
of Australia and Polynesia; nests in tree cavities	the act of swallowing
bluish-green-and-white North American swallow; nests in tree cavities	small long-winged songbird noted for swift graceful flight and the regularity of its migrations
	a small amount of liquid food

tree swallow (verb)	swallow (verb)
	believe or accept without questioning or challenge
	keep from expressing
	tolerate or accommodate oneself to
	take back what one has said
	utter unclearly
	engulf and destroy
	pass through the esophagus as part of eating or drinking
	enclose or envelop completely, as if by swallowing