swift vs European swift

swift and European swift both are nouns.

Word	Noun	Adjective	Verb	Adverb
swift	Yes	Yes	No	No
European swift	Yes	No	No	No

As nouns, European swift is a hyponym of swift; that is, European swift is a word with a more specific, narrower meaning than swift:

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

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

swift (adjective)	European swift (adjective)
moving very fast