Limit: exact buy/sell order say buy 10
[email protected], only if the price reaches 100.50 you'll be able to buy at 100.50, else you won't have the order executed.
stoploss: a sell or buy order when a certain criteria (trigger price = market price) is met, then this order will be executed as limit order as specified. (search stoploss order for more info here at traderji.com)
trigger: When market price is equal to trigger price, then only stoploss will be will be used as limit order. One has to specify both limit price and trigger price in the stoploss order.
market order: market order is a guaranteed execution of your order but at a small or huge loss. try not to use this ever. market order is a loss making order. you'll be getting things at very high price or selling your stuff at a very lower price. so, simply, avoid this!!! Do you know all broker's dealers will ask you whether you want to sell your shares at market price... Would you like to sell your shares at market price???