eelgrass family vs Zosteraceae

eelgrass family and Zosteraceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
eelgrass family	Yes	No	No	No
Zosteraceae	Yes	No	No	No

As nouns, eelgrass family and Zosteraceae are synonyms defined as:

eelgrass family and Zosteraceae: used in some classifications: essentially equivalent to Potamogetonaceae

Other synonyms of eelgrass family include family Zosteraceae.

eelgrass family (noun)	Zosteraceae (noun)
used in some classifications: essentially equivalent to Potamogetonaceae	used in some classifications: essentially equivalent to Potamogetonaceae