This is a breif explaination of the types of orders that you will see presented on your MT4 platform
- Buy Stop – Order placed above the price and keeps going up
- Buy Limit- Order placed below the price and keeps going up
- Sell Stop – Order placed below the price and keeps going down
- Sell Limit – Order placed above the price and keeps going down

For a full explaination please see this post on babypips: https://www.babypips.com/learn/forex/types-of-orders