dawdling vs holdup

dawdling and holdup both are nouns.

Word	Noun	Adjective	Verb	Adverb
dawdling	Yes	No	No	No
holdup	Yes	No	No	No

As nouns, holdup is a hypernym of dawdling; that is, holdup is a word with a broader meaning than dawdling:

dawdling: the deliberate act of delaying and playing instead of working
holdup: the act of delaying; inactivity resulting in something being put off until a later time

Other hypernyms of dawdling include delay.

dawdling (noun)	holdup (noun)
the deliberate act of delaying and playing instead of working	robbery at gunpoint
	the act of delaying; inactivity resulting in something being put off until a later time