postponer vs cunctator

postponer and cunctator both are nouns.

Word	Noun	Adjective	Verb	Adverb
postponer	Yes	No	No	No
cunctator	Yes	No	No	No

As nouns, postponer and cunctator are synonyms defined as:

postponer and cunctator: someone who postpones work (especially out of laziness or habitual carelessness)

Other synonyms of postponer include procrastinator.

postponer (noun)	cunctator (noun)
someone who postpones work (especially out of laziness or habitual carelessness)	someone who postpones work (especially out of laziness or habitual carelessness)