foxberry vs mountain cranberry

foxberry and mountain cranberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
foxberry	Yes	No	No	No
mountain cranberry	Yes	No	No	No

As nouns, foxberry and mountain cranberry are synonyms defined as:

foxberry and mountain cranberry: low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries

Other synonyms of foxberry include cowberry, lingberry, lingenberry, lingonberry, Vaccinium vitis-idaea.

foxberry (noun)	mountain cranberry (noun)
low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries	tart red berries similar to American cranberries but smaller
	low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries