glandular Labrador tea vs shrub

glandular Labrador tea and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
glandular Labrador tea	Yes	No	No	No
shrub	Yes	No	No	No

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

glandular Labrador tea: a Rocky Mountain shrub similar to Ledum groenlandicum
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of glandular Labrador tea include bush.

glandular Labrador tea (noun)	shrub (noun)
a Rocky Mountain shrub similar to Ledum groenlandicum	a low woody perennial plant usually having several major stems