garden truck vs food

garden truck and food both are nouns.

Word	Noun	Adjective	Verb	Adverb
garden truck	Yes	No	No	No
food	Yes	No	No	No

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

garden truck: fresh fruits and vegetable grown for the market
food: any solid substance (as opposed to liquid) that is used as a source of nourishment

Other hypernyms of garden truck include solid food.

garden truck (noun)	food (noun)
fresh fruits and vegetable grown for the market	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