beggar's-ticks vs beggar-ticks

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

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

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

beggar's-ticks and beggar-ticks: 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 bur marigold, burr marigold, sticktight.

beggar's-ticks (noun)	beggar-ticks (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
	the seed of bur marigolds