family Gerridae vs family Gerrididae

family Gerridae and family Gerrididae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Gerridae	Yes	No	No	No
family Gerrididae	Yes	No	No	No

As nouns, family Gerridae and family Gerrididae are synonyms defined as:

family Gerridae and family Gerrididae: an arthropod family that includes water striders

Other synonyms of family Gerridae include Gerridae, Gerrididae.

family Gerridae (noun)	family Gerrididae (noun)
an arthropod family that includes water striders	an arthropod family that includes water striders
mojarras