family Chalcidae vs family Chalcididae

family Chalcidae and family Chalcididae both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Chalcidae	Yes	No	No	No
family Chalcididae	Yes	No	No	No

As nouns, family Chalcidae and family Chalcididae are synonyms defined as:

family Chalcidae and family Chalcididae: an arthropod family including: chalcidflies

Other synonyms of family Chalcidae include Chalcidae, Chalcididae.

family Chalcidae (noun)	family Chalcididae (noun)
an arthropod family including: chalcidflies	an arthropod family including: chalcidflies