family Odontaspididae vs Carchariidae

family Odontaspididae and Carchariidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Odontaspididae	Yes	No	No	No
Carchariidae	Yes	No	No	No

As nouns, family Odontaspididae and Carchariidae are synonyms defined as:

family Odontaspididae and Carchariidae: sand sharks; in some classifications coextensive with family Carcharhinidae

Other synonyms of family Odontaspididae include family Carchariidae, Odontaspididae.

family Odontaspididae (noun)	Carchariidae (noun)
sand sharks; in some classifications coextensive with family Carcharhinidae	sand sharks; in some classifications coextensive with family Carcharhinidae