beggar's-ticks vs subshrub

beggar's-ticks and subshrub both are nouns.

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

As nouns, subshrub is a hypernym of beggar's-ticks; that is, subshrub is a word with a broader meaning than beggar's-ticks:

beggar's-ticks: any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing
subshrub: low-growing woody shrub or perennial with woody base

Other hypernyms of beggar's-ticks include suffrutex.

beggar's-ticks (noun)	subshrub (noun)
any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing	low-growing woody shrub or perennial with woody base