A. What is the difference between ethics and morality?
Ethics and morality have common or rather tightly knit Greek-Latin roots: the Latin word «moralis» is a copy of the Greek adjective «ηθικός» "ethical" (check it in Google translator). Nonetheless, despite the formal identity of these terms from the very beginning you can see some - very significant - difference in content and method of use.
«Ethos» is a Greek word meaning "character" that is used to describe the guiding beliefs or ideals that characterize a community, nation, or ideology (http://en.wikipedia.org/wiki/Ethos). Meanwhile «mos» («mores» plural) in Latin means habit, custom, manner which rather can be implied to the individual then to the society. But once the individual “mos” gets connected to the society it turns into principle «mos maiorum» ("ancestral custom" or "way of the elders,") which is the unwritten code from which the ancient Romans derived their social norms. It is the core concept of Roman traditionalism, distinguished from but in dynamic complement to written law. The mos maiorum was collectively the time-honored principles, behavioral models, and social practices that affected private, political, and military life in ancient Rome (http://en.wikipedia.org/wiki/Mos_maiorum) – very close to Ethics, isn’t it?
Although the words can be considered synonyms, morals are beliefs based on practices or teachings regarding how people conduct themselves in personal relationships and in society, while ethics refers to a set or system of principles, or a philosophy or theory behind them. (Principles, however, is itself is a synonym for morals.)
So, ethics is the rules of conduct recognized in respect to a particular class of human actions or a particular group, culture, etc: it defines how thing are according to the rules; while morals are principles or habits with respect to right or wrong conduct defining how things should work according to an individuals' ideals