Cornus mas vs cornel

Cornus mas and cornel both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cornus mas	Yes	No	No	No
cornel	Yes	No	No	No

As nouns, cornel is a hypernym of Cornus mas; that is, cornel is a word with a broader meaning than Cornus mas:

Cornus mas: deciduous European shrub or small tree having bright red fruit
cornel: a tree of shrub of the genus Cornus often having showy bracts resembling flowers

Other hypernyms of Cornus mas include dogwood, dogwood tree.

Cornus mas (noun)	cornel (noun)
deciduous European shrub or small tree having bright red fruit	a tree of shrub of the genus Cornus often having showy bracts resembling flowers