bene means 'well' and comes from Latin.
Some words using bene are:
benediction - to speak well of
benefaction - to do good. This word use the Latin word facere which means 'to do'
beneficent (adjective). Doing or producing good, especially performing acts of kindness and charity
beneficial (adj). Conducive to personal or social well being. This word is based on the Latin beneficium meaning favor or benefit.
benefit. (n) Something that promotes well-being or useful. benfet is the neutral form of bene factus so you can see how the words benefit and benefactor are closely related.