Larus ridibundus vs blackcap

Larus ridibundus and blackcap both are nouns.

Word	Noun	Adjective	Verb	Adverb
Larus ridibundus	Yes	No	No	No
blackcap	Yes	No	No	No

As nouns, Larus ridibundus and blackcap are synonyms defined as:

Other synonyms of Larus ridibundus include laughing gull, pewit, pewit gull.

Larus ridibundus (noun)	blackcap (noun)
small black-headed European gull	small brownish-grey warbler with a black crown
	chickadee having a dark crown
	small black-headed European gull
	raspberry native to eastern North America having black thimble-shaped fruit