Xylosma congestum vs xylosma

Xylosma congestum and xylosma both are nouns.

Word	Noun	Adjective	Verb	Adverb
Xylosma congestum	Yes	No	No	No
xylosma	Yes	No	No	No

As nouns, Xylosma congestum and xylosma are synonyms defined as:

Xylosma congestum and xylosma: shrub or small tree grown as an ornamental in mild climates for its neat evergreen foliage and fragrant late flowers; native of China

Xylosma congestum (noun)	xylosma (noun)
shrub or small tree grown as an ornamental in mild climates for its neat evergreen foliage and fragrant late flowers; native of China	shrub or small tree grown as an ornamental in mild climates for its neat evergreen foliage and fragrant late flowers; native of China