family Hyperodontidae vs Hyperodontidae

family Hyperodontidae and Hyperodontidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Hyperodontidae	Yes	No	No	No
Hyperodontidae	Yes	No	No	No

As nouns, family Hyperodontidae and Hyperodontidae are synonyms defined as:

family Hyperodontidae and Hyperodontidae: beaked whales; in some especially former classifications included in the family Physeteridae

Other synonyms of family Hyperodontidae include family Ziphiidae, Ziphiidae.

family Hyperodontidae (noun)	Hyperodontidae (noun)
beaked whales; in some especially former classifications included in the family Physeteridae	beaked whales; in some especially former classifications included in the family Physeteridae