knottiness vs complication

knottiness and complication both are nouns.

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

As nouns, knottiness and complication are synonyms defined as:

Other synonyms of knottiness include complicatedness, tortuousness.

knottiness (noun)	complication (noun)
puzzling complexity	the act or process of complicating
	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