prolonged vs protracted

prolonged and protracted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
prolonged	No	Yes	No	No
protracted	No	Yes	No	No

As adjectives, prolonged and protracted are synonyms defined as:

prolonged and protracted: relatively long in duration; tediously protracted

Other synonyms of prolonged include drawn-out, extended, lengthy.

prolonged (adjective)	protracted (adjective)
drawn out or made longer spatially	relatively long in duration; tediously protracted
relatively long in duration; tediously protracted