UnScramble this Word: g e t p t s o a?

Questions

Definitions -isms: Excessive emphasis on financial gain.?

Definitions -isms: Excessive enthusiasm or zeal for a cause.?

Definitions -isms: Poisoning caused by a toxin in improperly prepared food.?

Definitions -isms: Public ownership of the basic means of production, distribution, and exchange.?

Definitions -isms: The belief in living a very austere and self-denying life.?