scarlet tanager vs tanager

scarlet tanager and tanager both are nouns.

Word	Noun	Adjective	Verb	Adverb
scarlet tanager	Yes	No	No	No
tanager	Yes	No	No	No

As nouns, tanager is a hypernym of scarlet tanager; that is, tanager is a word with a broader meaning than scarlet tanager:

scarlet tanager: the male is bright red with black wings and tail
tanager: any of numerous New World woodland birds having brightly colored males

scarlet tanager (noun)	tanager (noun)
the male is bright red with black wings and tail	any of numerous New World woodland birds having brightly colored males