woodruff vs suffrutex

woodruff and suffrutex both are nouns.

Word	Noun	Adjective	Verb	Adverb
woodruff	Yes	No	No	No
suffrutex	Yes	No	No	No

As nouns, suffrutex is a hypernym of woodruff; that is, suffrutex is a word with a broader meaning than woodruff:

Other hypernyms of woodruff include subshrub.

woodruff (noun)	suffrutex (noun)
any plant of the genus Asperula	low-growing woody shrub or perennial with woody base
Old World fragrant stoloniferous perennial having small white flowers and narrow leaves used as flavoring and in sachets; widely cultivated as a ground cover; in some classifications placed in genus Asperula