smilo vs ricegrass

smilo and ricegrass both are nouns.

Word	Noun	Adjective	Verb	Adverb
smilo	Yes	No	No	No
ricegrass	Yes	No	No	No

As nouns, ricegrass is a hypernym of smilo; that is, ricegrass is a word with a broader meaning than smilo:

smilo: perennial mountain rice native to Mediterranean region and introduced into North America
ricegrass: any grass of the genus Oryzopsis

Other hypernyms of smilo include rice grass.

smilo (noun)	ricegrass (noun)
perennial mountain rice native to Mediterranean region and introduced into North America	any grass of the genus Oryzopsis