cat's-ear vs Hypochaeris radicata

cat's-ear and Hypochaeris radicata both are nouns.

Word	Noun	Adjective	Verb	Adverb
cat's-ear	Yes	No	No	No
Hypochaeris radicata	Yes	No	No	No

As nouns, cat's-ear and Hypochaeris radicata are synonyms defined as:

cat's-ear and Hypochaeris radicata: European weed widely naturalized in North America having yellow flower heads and leaves resembling a cat's ears

Other synonyms of cat's-ear include California dandelion, capeweed, gosmore.

cat's-ear (noun)	Hypochaeris radicata (noun)
European weed widely naturalized in North America having yellow flower heads and leaves resembling a cat's ears	European weed widely naturalized in North America having yellow flower heads and leaves resembling a cat's ears
any of several plants of the genus Calochortus having flowers with petals shaped like cat's ears