Cycadaceae vs family Cycadaceae

Cycadaceae and family Cycadaceae both are nouns.

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

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

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

Other synonyms of Cycadaceae include cycad family.

Cycadaceae (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