soul food vs food

soul food and food both are nouns.

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

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

soul food: food traditionally eaten by African-Americans in the South
food: any substance that can be metabolized by an animal to give energy and build tissue

Other hypernyms of soul food include nutrient.

soul food (noun)	food (noun)
food traditionally eaten by African-Americans in the South	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