push aside vs disregard

push aside is not a noun while disregard is a noun.

Word	Noun	Adjective	Verb	Adverb
push aside	No	No	Yes	No
disregard	Yes	No	Yes	No

As verbs, push aside and disregard are synonyms defined as:

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

push aside (noun)	disregard (noun)
	willful lack of care and attention
	lack of attention and due care

push aside (verb)	disregard (verb)
bar from attention or consideration	give little or no attention to
push out of the way	bar from attention or consideration
	refuse to acknowledge