Cleome serrulata vs cleome

Cleome serrulata and cleome both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cleome serrulata	Yes	No	No	No
cleome	Yes	No	No	No

As nouns, cleome is a hypernym of Cleome serrulata; that is, cleome is a word with a broader meaning than Cleome serrulata:

Cleome serrulata: plant of western North America having trifoliate leaves and white or pink spider-shaped flowers; sometimes used as an ornamental
cleome: any of various often strong-smelling plants of the genus Cleome having showy spider-shaped flowers

Other hypernyms of Cleome serrulata include spiderflower.

Cleome serrulata (noun)	cleome (noun)
plant of western North America having trifoliate leaves and white or pink spider-shaped flowers; sometimes used as an ornamental	any of various often strong-smelling plants of the genus Cleome having showy spider-shaped flowers