"being" as a noun is a word to describe existing or living. example: a Human Being.
"Be" is what is called an auxiliary verb or a minor verb that leads to a proper verb. "Be" is a future tense, "Been" is a past tense and "Being" is a current tense.
Examples:
You are going to be hurt. (future tense)
Where have you been hurt (past tense)
I am being hurt! (Current tense)
Further "being" is "continuing to be".