golden crownbeard vs cowpen daisy

golden crownbeard and cowpen daisy both are nouns.

Word	Noun	Adjective	Verb	Adverb
golden crownbeard	Yes	No	No	No
cowpen daisy	Yes	No	No	No

As nouns, golden crownbeard and cowpen daisy are synonyms defined as:

golden crownbeard and cowpen daisy: coarse greyish-green annual yellow-flowered herb; southwestern United States to Mexico

Other synonyms of golden crownbeard include butter daisy, golden crown beard, Verbesina encelioides, Ximenesia encelioides.

golden crownbeard (noun)	cowpen daisy (noun)
coarse greyish-green annual yellow-flowered herb; southwestern United States to Mexico	coarse greyish-green annual yellow-flowered herb; southwestern United States to Mexico