sugar-bush vs sumach

sugar-bush and sumach both are nouns.

Word	Noun	Adjective	Verb	Adverb
sugar-bush	Yes	No	No	No
sumach	Yes	No	No	No

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

sugar-bush: evergreen shrub of southeastern United States with spikes of reddish yellow flowers and glandular hairy fruits
sumach: a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)

Other hypernyms of sugar-bush include shumac, sumac.

sugar-bush (noun)	sumach (noun)
evergreen shrub of southeastern United States with spikes of reddish yellow flowers and glandular hairy fruits	a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)