shumac vs shrub

shumac and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
shumac	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of shumac; that is, shrub is a word with a broader meaning than shumac:

shumac: a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of shumac include bush.

shumac (noun)	shrub (noun)
a shrub or tree of the genus Rhus (usually limited to the non-poisonous members of the genus)	a low woody perennial plant usually having several major stems