Parus caeruleus vs blue tit

Parus caeruleus and blue tit both are nouns.

Word	Noun	Adjective	Verb	Adverb
Parus caeruleus	Yes	No	No	No
blue tit	Yes	No	No	No

As nouns, Parus caeruleus and blue tit are synonyms defined as:

Parus caeruleus and blue tit: widely distributed European titmouse with bright cobalt blue wings and tail and crown of the head

Other synonyms of Parus caeruleus include tomtit.

Parus caeruleus (noun)	blue tit (noun)
widely distributed European titmouse with bright cobalt blue wings and tail and crown of the head	widely distributed European titmouse with bright cobalt blue wings and tail and crown of the head