canned meat vs Spam

canned meat and Spam both are nouns.

Word	Noun	Adjective	Verb	Adverb
canned meat	Yes	No	No	No
Spam	Yes	No	No	No

As nouns, Spam is a hyponym of canned meat; that is, Spam is a word with a more specific, narrower meaning than canned meat:

Other hyponyms of canned meat include Fanny Adams.

canned meat (noun)	Spam (noun)
meat preserved in a can or tin	a canned meat made largely from pork