reject vs disregard

reject and disregard both are nouns.

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

As verbs, disregard is a hyponym of reject; that is, disregard is a word with a more specific, narrower meaning than reject:

reject (noun)	disregard (noun)
the person or thing that is rejected or set aside as inferior in quality	willful lack of care and attention
	lack of attention and due care

reject (verb)	disregard (verb)
not accept something given or offered	give little or no attention to
dismiss from consideration or a contest	bar from attention or consideration
deem wrong or inappropriate	refuse to acknowledge
reject with contempt
not accept as true
refuse entrance or membership
resist immunologically the introduction of some foreign tissue or organ