cornel vs Cornus mas

cornel and Cornus mas both are nouns.

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

As nouns, Cornus mas is a hyponym of cornel; that is, Cornus mas is a word with a more specific, narrower meaning than cornel:

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

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