Carpodacus mexicanus vs linnet

Carpodacus mexicanus and linnet both are nouns.

Word	Noun	Adjective	Verb	Adverb
Carpodacus mexicanus	Yes	No	No	No
linnet	Yes	No	No	No

As nouns, Carpodacus mexicanus and linnet are synonyms defined as:

Carpodacus mexicanus and linnet: small finch originally of the western United States and Mexico

Other synonyms of Carpodacus mexicanus include house finch.

Carpodacus mexicanus (noun)	linnet (noun)
small finch originally of the western United States and Mexico	small Old World finch whose male has a red breast and forehead
	small finch originally of the western United States and Mexico