Many students often get confused to use these three words, dead, death, die. Here is the solution.
Dead is an adjective:
•Being in a lifeless state
Water your plant or it will be dead.
•He was shot dead.
Death(noun)- The end of life
Nobody escapes death
Death is the gateway to eternity.
She died in a plane crash.
Died- past tense and past participle of the verb die.