greasewood vs black greasewood

greasewood and black greasewood both are nouns.

Word	Noun	Adjective	Verb	Adverb
greasewood	Yes	No	No	No
black greasewood	Yes	No	No	No

As nouns, greasewood and black greasewood are synonyms defined as:

greasewood and black greasewood: low hardy much-branched spiny shrub common in alkaline soils of western America

Other synonyms of greasewood include Sarcobatus vermiculatus.

greasewood (noun)	black greasewood (noun)
low hardy much-branched spiny shrub common in alkaline soils of western America	low hardy much-branched spiny shrub common in alkaline soils of western America