Ledum palustre vs shrub

Ledum palustre and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ledum palustre	Yes	No	No	No
shrub	Yes	No	No	No

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

Ledum palustre: bog shrub of northern and central Europe and eastern Siberia to Korea and Japan
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of Ledum palustre include bush.

Ledum palustre (noun)	shrub (noun)
bog shrub of northern and central Europe and eastern Siberia to Korea and Japan	a low woody perennial plant usually having several major stems