Cave in means to collapse or to give in.

Example: The tunnel might cave in during the quake.

Cavity means a decayed hole in a tooth.

Example: The dentist found a cavity in her molar.

Cease means to stop doing something.

Example: All fighting will cease at midnight.

A cellar is a room below ground level, often for storage.

Example: We stored the jars in the cellar.

A chaplain is a member of the clergy attached to an institution.

Example: The hospital chaplain visited daily.

A chapter is a division in a book.

Example: Read chapter four before the quiz.

Characteristics are features that define something.

Example: Honesty is one of her best characteristics.

To characterize means to describe someone or something by its traits.

Example: His work is characterized by precision.

To charge means to ask for payment.

Example: They charged $10 for delivery.

Chase means to run after something or someone.

Example: The police chased the thief through the alley.

Chaste means pure in thought or simple in style.

Example: She lived a chaste and simple life.

Chat means to talk informally.

Example: We sat and chatted over coffee.

Check means to look at something carefully.

Example: Please check your answers before submitting.

Check in means to register at a hotel or airport.

Example: We checked in at the hotel at 3 PM.

Check off means to mark items as done.

Example: I checked off the tasks one by one.

Cheap means costing little money.

Example: This pen was really cheap but works great.

Cheat means to break rules to gain advantage.

Example: He cheated on the test.

Cheerful means full of happiness and optimism.

Example: She is always cheerful and smiling.

Cherish means to love and hold dear.

Example: I cherish the memories of our time together.

Chief means the leader or most important person.

Example: The fire chief led the rescue team.