Cornus canadensis vs cornel

Cornus canadensis and cornel both are nouns.

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

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

Cornus canadensis: creeping perennial herb distinguished by red berries and clustered leaf whorls at the tips of shoots; Greenland to Alaska
cornel: a tree of shrub of the genus Cornus often having showy bracts resembling flowers

Other hypernyms of Cornus canadensis include dogwood, dogwood tree.

Cornus canadensis (noun)	cornel (noun)
creeping perennial herb distinguished by red berries and clustered leaf whorls at the tips of shoots; Greenland to Alaska	a tree of shrub of the genus Cornus often having showy bracts resembling flowers