You know BBQ? 烧,烤
You know fry?? 炸,煎,炒
炸: lots of oil in a pot. VERY HOT!! Have u ever seen how the staffs in KFC or McD make french fries? 炸薯條!!!
煎: not much oil For example:Fried Beef Steak 煎牛排!!!
炒: in a pan. you 炒啊炒... constantly
烹 涮 As a chinese,,,I dont know what they exactly mean,, but I know they are related to foods.