alpine totara vs shrub

alpine totara and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
alpine totara	Yes	No	No	No
shrub	Yes	No	No	No

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

Other hypernyms of alpine totara include bush.

alpine totara (noun)	shrub (noun)
low wide-spreading coniferous shrub of New Zealand mountains	a low woody perennial plant usually having several major stems