cycad family vs family Cycadaceae

cycad family and family Cycadaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
cycad family	Yes	No	No	No
family Cycadaceae	Yes	No	No	No

As nouns, cycad family and family Cycadaceae are synonyms defined as:

cycad family and family Cycadaceae: ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids

Other synonyms of cycad family include Cycadaceae.

cycad family (noun)	family Cycadaceae (noun)
ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids	ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids