buckthorn family vs Rhamnaceae

buckthorn family and Rhamnaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
buckthorn family	Yes	No	No	No
Rhamnaceae	Yes	No	No	No

As nouns, buckthorn family and Rhamnaceae are synonyms defined as:

buckthorn family and Rhamnaceae: trees and shrubs usually thorny bearing drupaceous fruit many having medicinal value

Other synonyms of buckthorn family include family Rhamnaceae.

buckthorn family (noun)	Rhamnaceae (noun)
trees and shrubs usually thorny bearing drupaceous fruit many having medicinal value	trees and shrubs usually thorny bearing drupaceous fruit many having medicinal value