It is often mentioned when someone or something is beautiful, yet the measure of beauty is truly in the eye and mind of the beholder. While a beautiful blue sky with puffy clouds might be beautiful to the person with a lazy afternoon to spend, the rain those clouds might bring does nothing for the person planning to mow the grass. There is no particular correlation between opinions in this measurement, but not all will ever agree on what constitutes beauty.
For people looking at others, beauty is often measured in different ways. One person might admire high cheekbones, but their friend will look at the color of the eyes. Another person might find a heedful of hair to contribute enormously to the look of another person, but their companion might look at the same face and prefer less hair. For those trying to define it as an absolute, beauty can be very tricky.