canary vs singer

canary and singer both are nouns.

Word	Noun	Adjective	Verb	Adverb
canary	Yes	Yes	No	No
singer	Yes	No	No	No

As nouns, singer is a hypernym of canary; that is, singer is a word with a broader meaning than canary:

Other hypernyms of canary include vocaliser, vocalist, vocalizer.

canary (noun)	singer (noun)
any of several small Old World finches	a person who sings
a moderate yellow with a greenish tinge
a female singer
someone acting as an informer or decoy for the police

canary (adjective)	singer (adjective)
having the color of a canary; of a light to moderate yellow