default on vs neglect

default on is not a noun while neglect is a noun.

Word	Noun	Adjective	Verb	Adverb
default on	No	No	Yes	No
neglect	Yes	No	Yes	No

As verbs, neglect is a hypernym of default on; that is, neglect is a word with a broader meaning than default on:

Other hypernyms of default on include fail.

default on (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

default on (verb)	neglect (verb)
fail to pay up	leave undone or leave out
	give little or no attention to
	fail to attend to
	fail to do something; leave something undone