tortuousness vs complication

tortuousness and complication both are nouns.

Word	Noun	Adjective	Verb	Adverb
tortuousness	Yes	No	No	No
complication	Yes	No	No	No

As nouns, tortuousness and complication are synonyms defined as:

Other synonyms of tortuousness include complicatedness, knottiness.

tortuousness (noun)	complication (noun)
puzzling complexity	the act or process of complicating
a tortuous and twisted shape or position	puzzling complexity
	a development that complicates a situation
	a situation or condition that is complex or confused
	any disease or disorder that occurs during the course of (or because of) another disease