Cycas revoluta vs cycad

Cycas revoluta and cycad both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cycas revoluta	Yes	No	No	No
cycad	Yes	No	No	No

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

Cycas revoluta: dwarf palmlike cycad of Japan that yields sago
cycad: any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves

Cycas revoluta (noun)	cycad (noun)
dwarf palmlike cycad of Japan that yields sago	any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves