cause........that which produces an effect. because.......for the reason that. because of..........on account of.

Moorche is correct. However, sometimes "cause" is used as a shortened form of "because" Example: He failed his exam 'cause [ because] he didn't study hard enough. Because of [ due to] his failure, he didn't get into university

Agreed with Moorche. You'll sometimes see people write "cause" when they mean "because", but this is a mistake. In casual spoken English, "because" is sometimes reduced to " 'cause " or " 'coz ", and this is where the misunderstanding comes from.