bearberry vs winterberry

bearberry and winterberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
bearberry	Yes	No	No	No
winterberry	Yes	No	No	No

As nouns, bearberry and winterberry are synonyms defined as:

bearberry and winterberry: deciduous shrub of southeastern and central United States

Other synonyms of bearberry include Ilex decidua, possum haw.

bearberry (noun)	winterberry (noun)
chiefly evergreen subshrubs of northern to Arctic areas	deciduous shrub of southeastern and central United States
deciduous shrub of southeastern and central United States
shrubby tree of the Pacific coast of the United States; yields cascara sagrada