leave out vs neglect

leave out is not a noun while neglect is a noun.

Word	Noun	Adjective	Verb	Adverb
leave out	No	No	Yes	No
neglect	Yes	No	Yes	No

As verbs, leave out and neglect are synonyms defined as:

Other synonyms of leave out include drop, miss, omit, overleap, overlook, pretermit.

leave out (noun)	neglect (noun)
	failure to act with the prudence that a reasonable person would exercise under the same circumstances
	willful lack of care and attention
	the trait of neglecting responsibilities and lacking concern
	lack of attention and due care
	the state of something that has been unused and neglected

leave out (verb)	neglect (verb)
leave undone or leave out	leave undone or leave out
prevent from being included or considered or accepted	give little or no attention to
	fail to attend to
	fail to do something; leave something undone