tomtit vs Parus caeruleus

tomtit and Parus caeruleus both are nouns.

Word	Noun	Adjective	Verb	Adverb
tomtit	Yes	No	No	No
Parus caeruleus	Yes	No	No	No

As nouns, tomtit and Parus caeruleus are synonyms defined as:

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

Other synonyms of tomtit include blue tit.

tomtit (noun)	Parus caeruleus (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