mountain box vs sand berry

mountain box and sand berry both are nouns.

Word	Noun	Adjective	Verb	Adverb
mountain box	Yes	No	No	No
sand berry	Yes	No	No	No

As nouns, mountain box and sand berry are synonyms defined as:

mountain box and sand berry: evergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berries; leaves turn red in autumn

mountain box (noun)	sand berry (noun)
evergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berries; leaves turn red in autumn	evergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berries; leaves turn red in autumn