teredo vs teredinid

teredo and teredinid both are nouns.

Word	Noun	Adjective	Verb	Adverb
teredo	Yes	No	No	No
teredinid	Yes	No	No	No

As nouns, teredinid is a hypernym of teredo; that is, teredinid is a word with a broader meaning than teredo:

teredo: typical shipworm
teredinid: wormlike marine bivalve that bores into wooden piers and ships by means of drill-like shells

Other hypernyms of teredo include shipworm.

teredo (noun)	teredinid (noun)
typical shipworm	wormlike marine bivalve that bores into wooden piers and ships by means of drill-like shells