It and Know-it-all

It noun - The branch of engineering that deals with the use of computers and telecommunications to retrieve and store and transmit information.

Know-it-all and it are semantically related. In some cases you can replace phrase "Know-it-all" with "It", this terms are similar.

Know-it-all noun - Someone who thinks he knows everything and refuses to accept advice or information from others.

It and know-it-all are semantically related. Sometimes you can replace term "It" with "Know-it-all", this terms are similar.