Sillaginidae vs fish family

Sillaginidae and fish family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sillaginidae	Yes	No	No	No
fish family	Yes	No	No	No

As nouns, fish family is a hypernym of Sillaginidae; that is, fish family is a word with a broader meaning than Sillaginidae:

Sillaginidae: small family of small food fishes in shallow waters of the Pacific around Indonesia
fish family: any of various families of fish

Sillaginidae (noun)	fish family (noun)
small family of small food fishes in shallow waters of the Pacific around Indonesia	any of various families of fish