superfood vs food

superfood and food both are nouns.

Word	Noun	Adjective	Verb	Adverb
superfood	Yes	No	No	No
food	Yes	No	No	No

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

superfood: a food with health benefits
food: any solid substance (as opposed to liquid) that is used as a source of nourishment

Other hypernyms of superfood include solid food.

superfood (noun)	food (noun)
a food with health benefits	any substance that can be metabolized by an animal to give energy and build tissue
	anything that provides mental stimulus for thinking
	any solid substance (as opposed to liquid) that is used as a source of nourishment