• right — a right is an enforceable moral claim upon another person. It follows that, for every right, there is a corresponding prohibition or obligation. For example, people have a right to life because murder is wrong. We have a right to private property because theft is wrong. Children have a right to be cared for by their parents, because parents have an obligation to care for their children. If anything is claimed to be a right, you ought to be able to flip it around and find a crime on the other side.
• privilege — an additional legal or procedural right granted to one person but not others, by an authority. Privileges can be based upon seniority; for example, high-school seniors may be allowed to drive their own vehicle to school, leave campus for lunch, or pull off a “senior prank” without being punished. Or a privilege may be awarded on a case by case basis. For example, Darius asked Haman, “What should be done for the man the king delights to honor?” Haman’s answer was the man should be dressed in the king’s robe, mounted upon the king’s horse, and paraded through the city. These were privileges. Privileges can be one-time, or they can be enjoyed indefinitely, like the right of officers to eat in the captain’s cabin. Privileges can be revoked in response to bad behavior. If someone enjoys something good, but it is not a special right granted by an authority or by virtue of seniority, then the good thing is not actually a privilege but perhaps one of the things below.
• advantage — a factor of any kind, from any cause, that makes it easier for someone to accomplish a goal. If the feature does not help the person accomplish the goal in view, then it is not an advantage with respect to that goal. For example, being tall is an advantage if you want to make a basket, but not if you want to take a long bus ride. Thomas Sowell has pointed out that it is very common for people who are envious of each other, for example, siblings, to each consider the other more advantaged.
• benefit — a benefit is a good thing that comes to someone as a result of something else. Benefits can come to us as a result of a privilege, as a gift, from luck, or even as a result of something bad (“the benefit of experience”). Not all benefits are privileges. This is a flexible word with a wide range of meaning. Every factor in our lives has both costs and benefits. Because this is such a wide category, many benefits come to people due to factors beyond any one person’s control.
• blessings, needs, the ideal — These words all describe the life we would like everyone, ideally, to have. We would like everyone to have good health; enough to eat; a clean, comfortable home; two loving parents; and a good education. We might describe these things as things people “need” in order to thrive, though many, many people live without them. Given that people seem to need them, but they turn out to be more of an ideal, we can infer that this is the sort of environment human beings were designed to function in before the world fell. We try to get as close to these as possible. To the degree that they are lacking, we suffer. When we have these things, we can consider them blessings or gifts. They are not rights in the sense of enforceable moral claims on others. To try to compel others to provide these things would, in most cases, be impossible or would constitute us doing them an injustice. (The exception is two married parents, which can be justly compelled to some degree.) Continuing with the ideals, we would like everybody to be good-looking, athletic, intelligent, talented, comfortable in their own skin, have good friends, and be easily understand by others. This is our ideal, but obviously it would be insane to try to compel other people to provide these things for us. Then we find ourselves in Harrison Bergeron territory.

It is my observation that many people use the word “right” to describe things they would like everyone to have. They say “right” when they mean “need” or “ideal.”

I’ve also noticed that many people describe every perceived advantage or benefit as a “privilege.” This is at best unclear language; at worst, it’s an attempt to foment class war. We need to cut it out.

If you are able to view video embeds on my blog, please enjoy Disney’s exploration of this concept: