leadwort vs shrub

leadwort and shrub both are nouns.

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

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

Other hypernyms of leadwort include bush.

leadwort (noun)	shrub (noun)
a plant of the genus Plumbago with blue flowers	a low woody perennial plant usually having several major stems