bourtree vs common elder

bourtree and common elder both are nouns.

Word	Noun	Adjective	Verb	Adverb
bourtree	Yes	No	No	No
common elder	Yes	No	No	No

As nouns, bourtree and common elder are synonyms defined as:

bourtree and common elder: a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies

Other synonyms of bourtree include black elder, elderberry, European elder, Sambucus nigra.

bourtree (noun)	common elder (noun)
a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies	a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies