Differance between SL and SL-M

When can i Use the SL and SL-M what main diff

SL - STOPLOSS LIMIT ORDER .IF STOPLOSS PRICE TRIGGERED IT WILL EXECUTE YOUR MENTIONED PARTICULAR PRICE

SL-M - STOPLOSS MARKET . IF STOPLOSS PRICE TRIGGERED MARKET AUTOMATICALLY EXECUTE THE ORDER FOR VARIOUS PRICE

USAGE OF SL - SLIPPAGE AVOID