Hyperodontidae vs Ziphiidae

Hyperodontidae and Ziphiidae both are nouns.

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

As nouns, Hyperodontidae and Ziphiidae are synonyms defined as:

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

Other synonyms of Hyperodontidae include family Hyperodontidae, family Ziphiidae.

Hyperodontidae (noun)	Ziphiidae (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