hawkbit vs arnica bud

hawkbit and arnica bud both are nouns.

Word	Noun	Adjective	Verb	Adverb
hawkbit	Yes	No	No	No
arnica bud	Yes	No	No	No

As nouns, arnica bud is a hyponym of hawkbit; that is, arnica bud is a word with a more specific, narrower meaning than hawkbit:

hawkbit: any of various common wildflowers of the genus Leontodon; of temperate Eurasia to Mediterranean regions
arnica bud: fall-blooming European herb with a yellow flower; naturalized in the United States

Other hyponyms of hawkbit include fall dandelion, Leontodon autumnalis.

hawkbit (noun)	arnica bud (noun)
any of various common wildflowers of the genus Leontodon; of temperate Eurasia to Mediterranean regions	fall-blooming European herb with a yellow flower; naturalized in the United States