Noah Webster
Complication
COMPLICATION, noun
1. The act of interweaving, or involving two or more things or parts; the state of being interwoven, involved or intimately blended.
The notions of a confused knowledge are always full of perplexity and complications.
2. The integral consisting of many things involved or interwoven, or mutually united.
By admitting a complication of ideas--the mind is bewildered.