compass plant vs prairie bird's-foot trefoil

compass plant and prairie bird's-foot trefoil both are nouns.

Word	Noun	Adjective	Verb	Adverb
compass plant	Yes	No	No	No
prairie bird's-foot trefoil	Yes	No	No	No

As nouns, compass plant and prairie bird's-foot trefoil are synonyms defined as:

compass plant and prairie bird's-foot trefoil: North American annual with red or rose-colored flowers

Other synonyms of compass plant include Lotus americanus, prairie lotus, prairie trefoil.

compass plant (noun)	prairie bird's-foot trefoil (noun)
any of several plants having leaves so arranged on the axis as to indicate the cardinal points of the compass	North American annual with red or rose-colored flowers
North American annual with red or rose-colored flowers