What is difference between RSI and MACD?

What is the difference between RSI and MACD?
They both seem to indicate overbought or undersold conditions.
Only thing I can see different is that the RSI can also be used when it’s moving through 50% to show the trend.

Why not read this excellent guide at ChartSchool - StockCharts.com

Investopedia . com for instance has a lot of very good material on trading, indicators, systems etc. Try to read a little on your own before starting threads right and left.
Relying on others to teach you will never get you anywhere, especially not in trading.

There is a huge difference between the two.

[B]Their mathematical derivations are completely different.[/B]

Too much to explain in one post.

The best treatment is in Steven Achelis’ book Technical Analysis for A to Z.

A totally full treatment of the MACD is given by its inventor, Gerald Appel, in his book Technical Analysis - Power Tools for Active Investors.