_Can_ for _May_. "Can I go fishing?" "He can call on me if he wishes
to."

_Candidate_ for _Aspirant_. In American politics, one is not a
candidate for an office until formally named (nominated) for it by a
convention, or otherwise, as provided by law or custom. So when a man
who is moving Heaven and Earth to procure the nomination protests that
he is "not a candidate" he tells the truth in order to deceive.

_Cannot_ for _Can_. "I cannot but go." Say, I can but go.

_Capable_. "Men are capable of being flattered." Say, susceptible to
flattery. "Capable of being refuted." Vulnerable to refutation. Unlike
capacity, capability is not passive, but active. We are capable of
doing, not of having something done to us.

_Capacity_ for _Ability_. "A great capacity for work." Capacity is
receptive; ability, potential. A sponge has capacity for water; the
hand, ability to squeeze it out.

_Casket_ for _Coffin_. A needless euphemism affected by undertakers.

_Casualties_ for _Losses_ in Battle. The essence of casualty is
accident, absence of design. Death and wounds in battle are produced
otherwise, are expectable and expected, and, by the enemy,
intentional.

_Chance_ for _Opportunity_. "He had a good chance to succeed."

_Chin Whiskers_. The whisker grows on the cheek, not the chin.