telegraph plant vs shrub

telegraph plant and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
telegraph plant	Yes	No	No	No
shrub	Yes	No	No	No

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

telegraph plant: erect tropical Asian shrub whose small lateral leaflets rotate on their axes and jerk up and down under the influence of sunshine
shrub: a low woody perennial plant usually having several major stems

Other hypernyms of telegraph plant include bush.

telegraph plant (noun)	shrub (noun)
erect tropical Asian shrub whose small lateral leaflets rotate on their axes and jerk up and down under the influence of sunshine	a low woody perennial plant usually having several major stems