Hypochaeris radicata vs California dandelion

Hypochaeris radicata and California dandelion both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hypochaeris radicata	Yes	No	No	No
California dandelion	Yes	No	No	No

As nouns, Hypochaeris radicata and California dandelion are synonyms defined as:

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

Other synonyms of Hypochaeris radicata include capeweed, cat's-ear, gosmore.

Hypochaeris radicata (noun)	California dandelion (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