beggar's-ticks vs burr marigold

beggar's-ticks and burr marigold both are nouns.

Word	Noun	Adjective	Verb	Adverb
beggar's-ticks	Yes	No	No	No
burr marigold	Yes	No	No	No

As nouns, beggar's-ticks and burr marigold are synonyms defined as:

beggar's-ticks and burr marigold: any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing

Other synonyms of beggar's-ticks include beggar-ticks, bur marigold, sticktight.

beggar's-ticks (noun)	burr marigold (noun)
any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing	any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing