Cooking methods?

boil, simmer - cook by immersing in boiling water

sweat - melt butter (or use other fats) to cook vegetables in their own juice over low heat, without browning them

roast - cook meat (occasionally vegetables) in an oven, repeatedly basting with the juice that has collected in the dish the meat is in, or add other liquids, like e.g wine

pot-roast - fry in hot fat, then add water/stock/wine and simmer over low heat on top of the cooker, occasionally turning the meat

bake - for cake or other things that need no further attention once they're in the oven

That's all I can think of at the moment, I'm sure there is more.
I do not understand the second part of your question.

explanation--
boil in water, steam,
i like steam cooking, add rice and water in a pressure cooker , water should be double the amount of rice, put the cooker on the stove, light the flame, when it starts to sound like steam is about to give a whistle, turn off the stove. When the steam cools , open the lid of the cooker, rice is boiled, steam cooked.

Grill. This means cooking things under the heat source. The Americans use the old English word "broil" for this.
Simmer. This means cooking things very slowly for a long time. Soups and stews are cooked this way.
Boil. Cook in water on top of the stove.
Casserole. This method of cooking requires placing something in a covered pot in the oven to cook slowly.
Bake. Cooking something in the oven without a cover on it.
Deep fry. Fry using a large quantity of (reusable) fat or oil.
Toast. Expose both sides of (usually) bread to a heat source, either under a grill, in front of a fire, or in a toaster.
Barbecue. Cook on an open grill with its own heat source.

Well i was never good at cooking, but chicken salt is good!