Viburnum opulus vs crampbark

Viburnum opulus and crampbark both are nouns.

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

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

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

Other synonyms of Viburnum opulus include cranberry tree, European cranberry bush, European cranberrybush, guelder rose.

Viburnum opulus (noun)	crampbark (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