abaddon

As an adjective false is

(label) one of two states of a boolean variable; logic.

As a verb abandon

is to subdue; to take control of.

As a noun abandon

is a yielding to natural impulses or inhibitions; freedom from artificial constraint, with loss of appreciation of consequences.

As an adverb abandon

is freely; entirely.

As a proper noun Abaddon is

the destroyer, or angel of the bottomless pit; Apollyon; Asmodeus.

As a proper noun tartarus

is (greek mythology) a dark and gloomy part of the realm of hades, reserved for the damned and the wicked, such as the titans, etc.

As proper nouns the difference between lucifer and abaddon

is that lucifer is a figure mentioned in Isaiah 14:12, generally identified with Satan while Abaddon is the destroyer, or angel of the bottomless pit; Apollyon; Asmodeus.

As a noun lucifer

is a self-igniting match, ie. one which could be lit by striking on any surface (as opposed to safety matches which only light against the material on the side of the box).

As proper nouns the difference between abaddon and abaddan

is that abaddon is the destroyer, or angel of the bottomless pit; Apollyon; Asmodeus while Abaddan is abaddon.