prolongation vs continuation

prolongation and continuation both are nouns.

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

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

Other hypernyms of prolongation include continuance.

As nouns, prolongation and continuation are synonyms defined as:

prolongation and continuation: the consequence of being lengthened in duration

Other synonyms of prolongation include lengthiness, protraction.

prolongation (noun)	continuation (noun)
the act of prolonging something	the act of continuing an activity without interruption
amount or degree or range to which something extends	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