topminnow vs Poeciliidae

topminnow and Poeciliidae both are nouns.

Word	Noun	Adjective	Verb	Adverb
topminnow	Yes	No	No	No
Poeciliidae	Yes	No	No	No

topminnow (noun)	Poeciliidae (noun)
small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters; often used in mosquito control	topminnows
freshwater fish of Central America having a long swordlike tail; popular aquarium fish