keratoacanthoma vs skin tumor

keratoacanthoma and skin tumor both are nouns.

Word	Noun	Adjective	Verb	Adverb
keratoacanthoma	Yes	No	No	No
skin tumor	Yes	No	No	No

As nouns, skin tumor is a hypernym of keratoacanthoma; that is, skin tumor is a word with a broader meaning than keratoacanthoma:

keratoacanthoma: skin tumor that grows rapidly (especially in older people) and resembles a carcinoma but does not spread; it usually disappears spontaneously, often leaving a scar
skin tumor: a neoplasm originating in the epidermis

Other hypernyms of keratoacanthoma include acanthoma.

keratoacanthoma (noun)	skin tumor (noun)
skin tumor that grows rapidly (especially in older people) and resembles a carcinoma but does not spread; it usually disappears spontaneously, often leaving a scar	a neoplasm originating in the epidermis