ceratodus vs lungfish

ceratodus and lungfish both are nouns.

Word	Noun	Adjective	Verb	Adverb
ceratodus	Yes	No	No	No
lungfish	Yes	No	No	No

As nouns, lungfish is a hypernym of ceratodus; that is, lungfish is a word with a broader meaning than ceratodus:

ceratodus: extinct lungfish
lungfish: air-breathing fish having an elongated body and fleshy paired fins; certain species construct mucus-lined mud coverings in which to survive drought

ceratodus (noun)	lungfish (noun)
extinct lungfish	air-breathing fish having an elongated body and fleshy paired fins; certain species construct mucus-lined mud coverings in which to survive drought