canned foods vs canned food

canned foods and canned food both are nouns.

Word	Noun	Adjective	Verb	Adverb
canned foods	Yes	No	No	No
canned food	Yes	No	No	No

As nouns, canned foods and canned food are synonyms defined as:

Other synonyms of canned foods include canned goods, tinned goods.

canned foods (noun)	canned food (noun)
food preserved by canning	food preserved by canning