A proper noun "carbon" represents a village in kneehill county, alberta, canada, as well as multiple towns and coal towns in different states of the united states.

(uncountable) The chemical element (symbol C) with an atomic number of 6. It can be found in pure form for example as graphite, a black, shiny and very soft material, or diamond, a colourless, transparent, crystalline solid and the hardest known material.

(countable) An atom of this element, in reference to a molecule containing it.

(countable, informal) A sheet of carbon paper.

(countable, informal) A carbon copy.

A fossil fuel that is made of impure carbon such as coal or charcoal.

(ecology, uncountable) carbon dioxide, in the context of climate change.

A carbon rod or pencil used in an arc lamp.

A plate or piece of carbon used as one of the elements of a voltaic battery.

(informal) Ellipsis of carbon fiber (reinforced polymer).

(Internet, transitive, uncommon) To cause (someone) to receive a carbon copy of an email message.