blue stem vs Andropogon furcatus

blue stem and Andropogon furcatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
blue stem	Yes	No	No	No
Andropogon furcatus	Yes	No	No	No

As nouns, blue stem and Andropogon furcatus are synonyms defined as:

blue stem and Andropogon furcatus: tall grass with smooth bluish leaf sheaths grown for hay in the United States

Other synonyms of blue stem include Andropogon gerardii, bluestem.

blue stem (noun)	Andropogon furcatus (noun)
tall grass with smooth bluish leaf sheaths grown for hay in the United States	tall grass with smooth bluish leaf sheaths grown for hay in the United States