Paliurus spina-christi vs shrub

Paliurus spina-christi and shrub both are nouns.

Word	Noun	Adjective	Verb	Adverb
Paliurus spina-christi	Yes	No	No	No
shrub	Yes	No	No	No

As nouns, shrub is a hypernym of Paliurus spina-christi; that is, shrub is a word with a broader meaning than Paliurus spina-christi:

Other hypernyms of Paliurus spina-christi include bush.

Paliurus spina-christi (noun)	shrub (noun)
thorny Eurasian shrub with dry woody winged fruit	a low woody perennial plant usually having several major stems