tent caterpillar vs caterpillar

tent caterpillar and caterpillar both are nouns.

Word	Noun	Adjective	Verb	Adverb
tent caterpillar	Yes	No	No	No
caterpillar	Yes	No	No	No

As nouns, caterpillar is a hypernym of tent caterpillar; that is, caterpillar is a word with a broader meaning than tent caterpillar:

tent caterpillar: the larvae of moths that build and live in communal silken webs in orchard and shade trees
caterpillar: a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth

tent caterpillar (noun)	caterpillar (noun)
the larvae of moths that build and live in communal silken webs in orchard and shade trees	a wormlike and often brightly colored and hairy or spiny larva of a butterfly or moth