subgenus Azaleastrum vs Azaleastrum

subgenus Azaleastrum and Azaleastrum both are nouns.

Word	Noun	Adjective	Verb	Adverb
subgenus Azaleastrum	Yes	No	No	No
Azaleastrum	Yes	No	No	No

As nouns, subgenus Azaleastrum and Azaleastrum are synonyms defined as:

subgenus Azaleastrum and Azaleastrum: group of evergreen or deciduous shrubs formerly considered a separate genus; now included in the genus Rhododendron

Other synonyms of subgenus Azaleastrum include subgenus Azalea.

subgenus Azaleastrum (noun)	Azaleastrum (noun)
group of evergreen or deciduous shrubs formerly considered a separate genus; now included in the genus Rhododendron	group of evergreen or deciduous shrubs formerly considered a separate genus; now included in the genus Rhododendron