Lock – a device operated by a key, combination, or keycard and used, as on a different door, for holding, closing, or securing.

Key – usually metal implement that is turned to open or close a lock.

Rekey – using the existing lock to get a new key, where the key that was used before no longer works on the lock.

Lock change – take the existing lock out and put in a whole new lock in place of the old one.

Lock install – to place a new lock in, where there was no lock before, consist on drilling a hole in the door.

High Security lock – very strong locks, provide the ultimate protection against any break- in entry methods and tools.

Deadbolt – a bolt on a lock that is moved by turning a key or knob without activation of a spring.

Double sided deadbolt – a double sided deadbolt is a deadbolt that locks from the inside and outside. You would need a key to open it and to lock it from both sides.

Door knob – a knob-shaped handle for opening and closing a door.

Passage lock – a simple handle that has no locking cylinder. For convenience purposes only.

Ignition key – a key that operates the ignition switch of an automotive engine.

Transponder key – a key that has an electric chip inside that provides additional security against car theft.

VAT System – vehicle anti theft security system that certain models of GM cars are occupied with.

Fresh installation – drilling and adjustment procedure in order to place a new lock in wood or metal doors where there is no space in the door.

Schlage – One of the two most common brands locks in America residential structures.

Kwikset – One of the two most common brands locks in America residential structures.