protraction vs continuation

protraction and continuation both are nouns.

Word	Noun	Adjective	Verb	Adverb
protraction	Yes	No	No	No
continuation	Yes	No	No	No

As nouns, continuation is a hypernym of protraction; that is, continuation is a word with a broader meaning than protraction:

Other hypernyms of protraction include continuance.

As nouns, protraction and continuation are synonyms defined as:

protraction and continuation: the consequence of being lengthened in duration

Other synonyms of protraction include lengthiness, prolongation.

protraction (noun)	continuation (noun)
the act of prolonging something	the act of continuing an activity without interruption
the consequence of being lengthened in duration	the consequence of being lengthened in duration
	a Gestalt principle of organization holding that there is an innate tendency to perceive a line as continuing its established direction
	a part added to a book or play that continues and extends it