Both the words "incite" and "insight" are pronounced exactly the same way, but they have totally different meaning. Incite means to advise and encourage someone to do what is violent or unpleasant, and will cause harm to them. An example of a sentence in which incite is used is: "the speech given by the man encouraged the louts to cause more trouble. The word "incite" is a verb that can also means "to entice someone into doing something for a reward".
For example; "the armed robbers incited him to join them by enticing him with money. On the other hand, "insight", which is a noun, means "the ability to have a clear understanding of something", or "the ability to have a good understanding of someone". For example; "the more experience you have as a leader determines your level of insight into situations". Thus, the word "incite" and "insight" are totally different from themselves, and cannot be used interchangeably for each other, else it will convey an entirely different meaning.