polyanthus vs Primula polyantha

polyanthus and Primula polyantha both are nouns.

Word	Noun	Adjective	Verb	Adverb
polyanthus	Yes	No	No	No
Primula polyantha	Yes	No	No	No

As nouns, polyanthus and Primula polyantha are synonyms defined as:

polyanthus and Primula polyantha: florists' primroses; considered a complex hybrid derived from oxlip, cowslip, and common primrose

polyanthus (noun)	Primula polyantha (noun)
florists' primroses; considered a complex hybrid derived from oxlip, cowslip, and common primrose	florists' primroses; considered a complex hybrid derived from oxlip, cowslip, and common primrose