Moral philosophy is commonly viewed as a social platform whose main purpose is to make communal life easier by strengthening peoples' social tolerance and capability to live a good life within a given community. Analogously, moral philosophers are in a way ethical engineers who express their views on ethical topics to help individuals learn how to cope with the challenges threatening the cycle of a good life. Moral philosophy tends to create hope for peace and harmony in an otherwise chaotic world. It is an existential necessity for all human beings who strive hard to make their lives meaningful. On this basis, all divine religions and moral philosophy most fundamentally try to guide us to hope and happiness and help us to distance ourselves from social decadence and nihilism.
Moral philosophy is a branch of philosophy that involves systematizing, defending and recommending concepts of right and wrong conduct.
Also known as Ethics. It seeks to resolve questions of human morality by defining concepts such as good and evil, right and wrong, virtue and vice, justice and crime.
To Effie Amonoo 's comment I would simply add that sometimes moral theory is known as "metaethics", whereas the simple term "ethics" and the phrase "moral philosophy" may encompass both moral theory and applied ethics. However, the terminology is somewhat fluid and the areas' boundaries aren't that sharp. Some helpful links:
Historically, in general, moral Philosophy can be divided by two namely moral monism and pluralism. Moral monism views that values and rules of moral is only one. The view of " moral uniformity" related with assumption of ontology monism or human uniformity. Adherents of this monism do not deny of the difference but the difference is not on the value of humanity.
Different with moral monism, moral pluralism is more accepting and appreciating the diversity of moral rules (culture pluralism, ethnic, religion, race, etc.)