A chimney is a structure that allows smoke and fumes to escape from a building. It is typically made of brick or stone and has a tall, narrow shaft that rises above the roof. Chimneys are necessary for homes with gas or wood-burning stoves or fireplaces. They help to prevent carbon monoxide poisoning and to keep the air in your home clean.
A hob is a cooking surface that is heated by gas or electricity. It is typically made of metal, such as cast iron or stainless steel, and has one or more burners. Hobs are used to cook a variety of foods, such as pasta, rice, and vegetables. They are an essential part of any kitchen.
Chimneys and hobs are often used together in kitchens. The chimney provides a way to vent the smoke and fumes from the hob, while the hob provides a place to cook food.