sourwood vs Oxydendrum arboreum

sourwood and Oxydendrum arboreum both are nouns.

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

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

sourwood and Oxydendrum arboreum: 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 sourwood include sorrel tree, titi.

sourwood (noun)	Oxydendrum arboreum (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