Amaranthus albus vs Amaranthus graecizans

Amaranthus albus and Amaranthus graecizans both are nouns.

Word	Noun	Adjective	Verb	Adverb
Amaranthus albus	Yes	No	No	No
Amaranthus graecizans	Yes	No	No	No

As nouns, Amaranthus albus and Amaranthus graecizans are synonyms defined as:

Amaranthus albus and Amaranthus graecizans: bushy plant of western United States

Other synonyms of Amaranthus albus include tumbleweed.

Amaranthus albus (noun)	Amaranthus graecizans (noun)
bushy plant of western United States	bushy plant of western United States