solanaceous vegetable vs veggie

solanaceous vegetable and veggie both are nouns.

Word	Noun	Adjective	Verb	Adverb
solanaceous vegetable	Yes	No	No	No
veggie	Yes	No	No	No

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

solanaceous vegetable: any of several fruits of plants of the family Solanaceae; especially of the genera Solanum, Capsicum, and Lycopersicon
veggie: edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous herbaceous plant

Other hypernyms of solanaceous vegetable include veg, vegetable.

solanaceous vegetable (noun)	veggie (noun)
any of several fruits of plants of the family Solanaceae; especially of the genera Solanum, Capsicum, and Lycopersicon	edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous herbaceous plant