Hypochaeris radicata vs cat's-ear

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

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

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

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

Other synonyms of Hypochaeris radicata include California dandelion, capeweed, gosmore.

Hypochaeris radicata (noun)	cat's-ear (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