veggie vs garden truck

veggie and garden truck both are nouns.

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

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

veggie: edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous herbaceous plant
garden truck: fresh fruits and vegetable grown for the market

Other hypernyms of veggie include green goods, green groceries, produce.

veggie (noun)	garden truck (noun)
edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous herbaceous plant	fresh fruits and vegetable grown for the market