corneum vs stratum corneum

corneum and stratum corneum both are nouns.

Word	Noun	Adjective	Verb	Adverb
corneum	Yes	No	No	No
stratum corneum	Yes	No	No	No

As nouns, corneum and stratum corneum are synonyms defined as:

corneum and stratum corneum: the outermost layer of the epidermis consisting of dead cells that slough off

Other synonyms of corneum include horny layer.

corneum (noun)	stratum corneum (noun)
the outermost layer of the epidermis consisting of dead cells that slough off	the outermost layer of the epidermis consisting of dead cells that slough off