zamia vs cycad

zamia and cycad both are nouns.

Word	Noun	Adjective	Verb	Adverb
zamia	Yes	No	No	No
cycad	Yes	No	No	No

As nouns, cycad is a hypernym of zamia; that is, cycad is a word with a broader meaning than zamia:

zamia: any of various cycads of the genus Zamia; among the smallest and most verdant cycads
cycad: any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves

zamia (noun)	cycad (noun)
any of various cycads of the genus Zamia; among the smallest and most verdant cycads	any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves