French honeysuckle vs subshrub

French honeysuckle and subshrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
French honeysuckle	Yes	No	No	No
subshrub	Yes	No	No	No

As nouns, subshrub is a hypernym of French honeysuckle; that is, subshrub is a word with a broader meaning than French honeysuckle:

French honeysuckle: perennial of southern Europe cultivated for forage and for its nectar-rich pink flowers that make it an important honey crop
subshrub: low-growing woody shrub or perennial with woody base

Other hypernyms of French honeysuckle include suffrutex.

French honeysuckle (noun)	subshrub (noun)
perennial of southern Europe cultivated for forage and for its nectar-rich pink flowers that make it an important honey crop	low-growing woody shrub or perennial with woody base
European herb with small fragrant crimson or white spurred flowers