crampbark vs Viburnum opulus

crampbark and Viburnum opulus both are nouns.

Word	Noun	Adjective	Verb	Adverb
crampbark	Yes	No	No	No
Viburnum opulus	Yes	No	No	No

As nouns, crampbark and Viburnum opulus are synonyms defined as:

crampbark and Viburnum opulus: deciduous thicket-forming Old World shrub with clusters of white flowers and small bright red berries

crampbark (noun)	Viburnum opulus (noun)
deciduous thicket-forming Old World shrub with clusters of white flowers and small bright red berries	deciduous thicket-forming Old World shrub with clusters of white flowers and small bright red berries