bear's grape vs mealberry

bear's grape and mealberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
bear's grape	Yes	No	No	No
mealberry	Yes	No	No	No

As nouns, bear's grape and mealberry are synonyms defined as:

bear's grape and mealberry: evergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berries; leaves turn red in autumn

bear's grape (noun)	mealberry (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