California dandelion vs Hypochaeris radicata

California dandelion and Hypochaeris radicata both are nouns.

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

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

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

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

California dandelion (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