Pieris japonica vs andromeda

Pieris japonica and andromeda both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pieris japonica	Yes	No	No	No
andromeda	Yes	No	No	No

As nouns, Pieris japonica and andromeda are synonyms defined as:

Pieris japonica and andromeda: broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers

Other synonyms of Pieris japonica include Japanese andromeda, lily-of-the-valley tree.

Pieris japonica (noun)	andromeda (noun)
broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers	any of several shrubs of the genus Andromeda having leathery leaves and clusters of small flowers
	broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers