Arranged marriage- a marriage where the parents decide the life-partner for their children. It is a spectrum, from a marriage purely decided by the parents with the girl or guy having no say in the matter, to the marriage where the son/daughter likes someone and the 'first move' is made by his/her parents to the other parents, and here generally it’s the boy's parents who speaks to the girl's parents.
Love marriage- the normal marriage as known in the western world, where the guy and the girl meet each other, start going out and decide to get married. In India, this kind of marriage may be opposed by either one or both their family and they get married against their parents' wishes.
Love arranged marriage- similar to above, except that the parents consent to their marriage and they marry with their parents' blessings.