Bidens connata vs bur marigold

Bidens connata and bur marigold both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bidens connata	Yes	No	No	No
bur marigold	Yes	No	No	No

As nouns, bur marigold is a hypernym of Bidens connata; that is, bur marigold is a word with a broader meaning than Bidens connata:

Bidens connata: bur marigold of eastern and northern United States and Canada common in wet pastures and meadows
bur marigold: any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing

Other hypernyms of Bidens connata include beggar's-ticks, beggar-ticks, burr marigold, sticktight.

Bidens connata (noun)	bur marigold (noun)
bur marigold of eastern and northern United States and Canada common in wet pastures and meadows	any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing