DEAD

A person who is dead is without life.

Expressions:   -the dead man

                     -he was shot dead in a gunfight

                     -I thought you were dead

Noun: the death

Adj: dead, deadly

Verb: To die

Syn: defunct,deceased,departed

ALIVE

  A person who is alive isn't dead or inanimate.

Expressions: -I think his father is still alive.

                   -The doctors are working very hard to keep him alive.

Noun: the life

Verb: to live

Adj.: alive