He uses a cane to help him walk.

The cannonball flew through the air and hit the castle wall.

The canon of the church provides guidance on religious doctrine and moral conduct.

She has the capability to solve complex problems.

The caption of the photo explained the meaning behind it.

The soldiers managed to rescue the captive from the enemy camp.

The caravan traveled through the desert.

Carbon is an essential element in organic compounds.

Carbon dioxide is a greenhouse gas.

I try to lessen my carbon footprint by using public transportation.