slight vs disregard

slight and disregard both are nouns.

Word	Noun	Adjective	Verb	Adverb
slight	Yes	Yes	Yes	No
disregard	Yes	No	Yes	No

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

Other hypernyms of slight include brush aside, brush off, discount, dismiss, ignore, push aside.

slight (noun)	disregard (noun)
a deliberate discourteous act (usually as an expression of anger or disapproval)	willful lack of care and attention
	lack of attention and due care

slight (adjective)	disregard (adjective)
(quantifier used with mass nouns) small in quantity or degree; not much or almost none or (with `a') at least some
lacking substance or significance
being of delicate or slender build

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