bush honeysuckle vs honeysuckle

bush honeysuckle and honeysuckle both are nouns.

Word	Noun	Adjective	Verb	Adverb
bush honeysuckle	Yes	No	No	No
honeysuckle	Yes	No	No	No

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

bush honeysuckle (noun)	honeysuckle (noun)
spreading bush of northeastern United States having small clusters of fragrant green and yellow flowers	shrub or vine of the genus Lonicera
bush honeysuckle of southeastern United States having large crowded clusters of sulfur-yellow flowers	columbine of eastern North America having long-spurred red flowers
a honeysuckle shrub of southern Russia to central Asia	shrubby tree with silky foliage and spikes of cylindrical yellow nectarous flowers