bear's ear vs Primula auricula

bear's ear and Primula auricula both are nouns.

Word	Noun	Adjective	Verb	Adverb
bear's ear	Yes	No	No	No
Primula auricula	Yes	No	No	No

As nouns, bear's ear and Primula auricula are synonyms defined as:

bear's ear and Primula auricula: yellow-flowered primrose native to Alps; commonly cultivated

Other synonyms of bear's ear include auricula.

bear's ear (noun)	Primula auricula (noun)
yellow-flowered primrose native to Alps; commonly cultivated	yellow-flowered primrose native to Alps; commonly cultivated