Police = plural noun - The police are coming!

To police = (1) to act as a police force, enforce laws, etc.  -  The Highway Patrol is now charged with policing the small towns near the freeway.  OSHA is empowered to police private industry for unsafe work conditions.

(2) to clean an area (very common in the military) - We need to police this area and get rid of cigarette butts, candy wrappers, and all other litter.

Policy/policies = Accepted method(s) of attaining organzational goals.  -  It is a policy of this store that no money will be refunded to a customer without a receipt.

You found a typographical error.  One of the funniest I ever heard of was in a newspaper article about a gunfight about 1890 between prostitutes in the American Old West.  The journalist wrote that "...the bullet entered just above the public arch."  The correct spelling was, of course, "pubic".  Both words aptly described the incident quite well.