it's a verb, noun, adjective, article, preposition, adverb, pronoun and what not !! but more importantly it's form of expression.
it's a multifaceted word that can be used universally.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".