southern arrow wood vs shrub

southern arrow wood and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
southern arrow wood	Yes	No	No	No
shrub	Yes	No	No	No

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

southern arrow wood: deciduous shrub of eastern North America having blue-black berries and tough pliant wood formerly used to make arrows
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of southern arrow wood include bush.

southern arrow wood (noun)	shrub (noun)
deciduous shrub of eastern North America having blue-black berries and tough pliant wood formerly used to make arrows	a low woody perennial plant usually having several major stems