Prunus vs plum

Prunus and plum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Prunus	Yes	No	No	No
plum	Yes	No	No	Yes

Prunus (noun)	plum (noun)
a genus of shrubs and trees of the family Rosaceae that is widely distributed in temperate regions	a highly desirable position or assignment
	any of numerous varieties of small to medium-sized round or oval fruit having a smooth skin and a single pit
	any of several trees producing edible oval fruit having a smooth skin and a single hard stone

Prunus (adverb)	plum (adverb)
	exactly
	completely; used as intensifiers