Coal: meaning, definitions and examples

A common fossil fuel used mainly for generating electricity and heating. It is a general term without specifying the type of coal.

• The power plant runs on coal

A specific type of coal that is hard, high in carbon, and burns with little smoke. It is often used for home heating and some industrial processes.

• Anthracite is more efficient and cleaner than other types of coal for heating homes

A low-grade type of coal with a lower carbon content and higher moisture content, often used for electricity generation.

• Lignite is often used in power stations in areas where it is mined

An accumulation of partially decayed vegetation or organic matter that can be used as a fuel, mostly in gardening for soil conditioning.

• Peat is often added to garden soil to improve its water retention

A form of carbon typically used for grilling food and certain industrial purposes. Different from coal, it is made from burning wood in the absence of oxygen.

• We used charcoal to grill the burgers at the barbecue

Typically used when referring to a common natural resource extracted for energy production or heating purposes.

• The coal mine started its operations in the 19th century.
• They used coal to heat their homes during the winter.

A general, neutral term used to discuss any cut and polished mineral used for jewelry or decoration.

• She had a collection of gemstones from different parts of the world.
• Gemstones can be found in various types and colors.

Often used to convey luxury and value, frequently seen in the context of personal adornments or treasured items.

• The queen's crown was adorned with numerous jewels.
• He gave her a precious jewel for their anniversary.

Describes valuable minerals used in high-end jewelry, often implying rarity and worth.

• Precious stones like diamonds and emeralds are very expensive.
• The museum displayed artifacts covered in precious stones.