lily-of-the-valley tree vs Japanese andromeda

lily-of-the-valley tree and Japanese andromeda both are nouns.

Word	Noun	Adjective	Verb	Adverb
lily-of-the-valley tree	Yes	No	No	No
Japanese andromeda	Yes	No	No	No

As nouns, lily-of-the-valley tree and Japanese andromeda are synonyms defined as:

lily-of-the-valley tree and Japanese andromeda: broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers

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

lily-of-the-valley tree (noun)	Japanese andromeda (noun)
broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers	broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers