I live cooking,cookery is the art, technology, science and craft of preparing food for consumption
Cooking is part of the human soul.  It is part of how we attained mastery over our environment and how we separate ourselves from other animals.
Yeah ,techniques and ingredients vary widely across the world, from grilling food over an open fire to using electric stoves, to baking in various types
That's right!  The various techniques are linked to a people and a culture's history, which is why food and cuisine are considered important cultural indicators.
skill and type of training an individual cook has determines the type of cooking
That's true, this is why chefs attain such seemingly outsized cultural importance despite the fact that 90% of humanity can cook decently.
Pressure cooking
Pressure cooking is the process of cooking food at high pressure, employing water or a water-based cooking liquid, in a sealed vessel known as a "pressure cooker". High pressure limits boiling, and permits cooking temperatures well above to be reached.
Pressure cookers work by expelling air from the vessel, and trapping the steam produced from the boiling liquid inside. This raises the internal pressures and permits high cooking temperatures. This, together with high thermal heat transfer from the steam, cooks food far
Cooking
Cooking or cookery is the art, technology, science and craft of preparing food for consumption. Cooking techniques and ingredients vary widely across the world, from grilling food over an open fire to using electric stoves, to baking in various types of ovens, reflecting unique environmental, economic, and cultural traditions and trends. The ways or types of cooking also depend on the skill and type of training an individual cook has. Cooking is done both by people in their own dwellings and by professional cooks and chefs in restaurants