Apus apus vs swift

Apus apus and swift both are nouns.

Word	Noun	Adjective	Verb	Adverb
Apus apus	Yes	No	No	No
swift	Yes	Yes	No	No

As nouns, swift is a hypernym of Apus apus; that is, swift is a word with a broader meaning than Apus apus:

Apus apus: common European bird with a shrieking call that nests chiefly about eaves of buildings or on cliffs
swift: a small bird that resembles a swallow and is noted for its rapid flight

Apus apus (noun)	swift (noun)
common European bird with a shrieking call that nests chiefly about eaves of buildings or on cliffs	a small bird that resembles a swallow and is noted for its rapid flight
	common western lizard; seen on logs or rocks

Apus apus (adjective)	swift (adjective)
	moving very fast