Here are basic terms that you will want to familiarize yourself with when starting in breakout trading:
Sideways market - A sideways market is when prices within an asset remain flatlined between support and resistance. Creating a channel where buyers/sellers trade back and forth between these two price levels.
Breakout - A breakout occurs when price action breaks above a resistance area or below a support area.
Price Action - How price moves up and down on a chart. This includes trends, trading ranges, and sideways markets.
Breakout Trading - Once prices break through the support/resistance area, it will then trade outside of this range creating a new trading channel. This is what breakout traders watch for to spot potential profit opportunities.