pedwood vs dogwood tree

pedwood and dogwood tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
pedwood	Yes	No	No	No
dogwood tree	Yes	No	No	No

As nouns, dogwood tree is a hypernym of pedwood; that is, dogwood tree is a word with a broader meaning than pedwood:

pedwood: European deciduous shrub turning red in autumn having dull white flowers
dogwood tree: a tree of shrub of the genus Cornus often having showy bracts resembling flowers

Other hypernyms of pedwood include cornel, dogwood.

pedwood (noun)	dogwood tree (noun)
European deciduous shrub turning red in autumn having dull white flowers	a tree of shrub of the genus Cornus often having showy bracts resembling flowers