scorn vs sneer

scorn and sneer both are nouns.

Word	Noun	Adjective	Verb	Adverb
scorn	Yes	No	Yes	No
sneer	Yes	No	Yes	No

As nouns, sneer is a hyponym of scorn; that is, sneer is a word with a more specific, narrower meaning than scorn:

Other hyponyms of scorn include fleer, leer.

scorn (noun)	sneer (noun)
open disrespect for a person or thing	a facial expression of contempt or scorn; the upper lip curls
lack of respect accompanied by a feeling of intense dislike	a contemptuous or scornful remark

scorn (verb)	sneer (verb)
reject with contempt	smile contemptuously
look down on with disdain	express through a scornful smile