veggie vs celery

veggie and celery both are nouns.

Word	Noun	Adjective	Verb	Adverb
veggie	Yes	No	No	No
celery	Yes	No	No	No

As nouns, celery is a hyponym of veggie; that is, celery is a word with a more specific, narrower 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
celery: stalks eaten raw or cooked or used as seasoning

veggie (noun)	celery (noun)
edible seeds or roots or stems or leaves or bulbs or tubers or nonsweet fruits of any of numerous herbaceous plant	stalks eaten raw or cooked or used as seasoning
	widely cultivated herb with aromatic leaf stalks that are eaten raw or cooked