cloud grass vs Agrostis nebulosa

cloud grass and Agrostis nebulosa both are nouns.

Word	Noun	Adjective	Verb	Adverb
cloud grass	Yes	No	No	No
Agrostis nebulosa	Yes	No	No	No

As nouns, cloud grass and Agrostis nebulosa are synonyms defined as:

cloud grass and Agrostis nebulosa: Spanish grass with light feathery panicles grown for dried bouquets

cloud grass (noun)	Agrostis nebulosa (noun)
Spanish grass with light feathery panicles grown for dried bouquets	Spanish grass with light feathery panicles grown for dried bouquets