Oxydendrum arboreum vs sourwood

Oxydendrum arboreum and sourwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oxydendrum arboreum	Yes	No	No	No
sourwood	Yes	No	No	No

As nouns, Oxydendrum arboreum and sourwood are synonyms defined as:

Oxydendrum arboreum and sourwood: deciduous shrubby tree of eastern North America having deeply fissured bark and sprays of small fragrant white flowers and sour-tasting leaves

Other synonyms of Oxydendrum arboreum include sorrel tree, titi.

Oxydendrum arboreum (noun)	sourwood (noun)
deciduous shrubby tree of eastern North America having deeply fissured bark and sprays of small fragrant white flowers and sour-tasting leaves	deciduous shrubby tree of eastern North America having deeply fissured bark and sprays of small fragrant white flowers and sour-tasting leaves