frozen foods vs food product

frozen foods and food product both are nouns.

Word	Noun	Adjective	Verb	Adverb
frozen foods	Yes	No	No	No
food product	Yes	No	No	No

As nouns, food product is a hypernym of frozen foods; that is, food product is a word with a broader meaning than frozen foods:

Other hypernyms of frozen foods include foodstuff.

frozen foods (noun)	food product (noun)
food preserved by freezing	a substance that can be used or prepared for use as food