cold-shoulder vs disregard

cold-shoulder is not a noun while disregard is a noun.

Word	Noun	Adjective	Verb	Adverb
cold-shoulder	No	No	Yes	No
disregard	Yes	No	Yes	No

As verbs, disregard is a hypernym of cold-shoulder; that is, disregard is a word with a broader meaning than cold-shoulder:

Other hypernyms of cold-shoulder include brush aside, brush off, discount, dismiss, ignore, push aside.

cold-shoulder (noun)	disregard (noun)
	willful lack of care and attention
	lack of attention and due care

cold-shoulder (verb)	disregard (verb)
pay no attention to, disrespect	give little or no attention to
	bar from attention or consideration
	refuse to acknowledge