Amber is fossilized tree resin (not sap), which has been appreciated for its color and natural beauty since Neolithic times. Amber is used as an ingredient in perfumes, as a healing agent in folk medicine, and as jewelry. There are five classes of amber, defined on the basis of their chemical constituents. Because it originates as a soft, sticky tree resin, amber sometimes contains animal and plant material as inclusions. Amber occurring in coal seams is also called resinite, and the term ambrite is applied to that found specifically within New Zealand coal seams.

The English word amber derives from the Arabic anbar, via Medieval Latin ambar and Old French ambre. The word originally referred to a precious oil derived from the Sperm whale (now called ambergris). The sense was extended to fossil resin circa 1400, and this became the main sense, as the use of ambergris waned. The two substances were confused, because they both were found washed up on beaches. Ambergris is less dense than water and floats, whereas amber is less dense than stone, but too dense to float. The word ambar was brought to Europe by the Crusaders. In French ambre gris (lit. gray amber), became used for ambergris, while ambre jaune (yellow amber), denoted the fossil resin we now call amber.

Shame is, variously, an affect, emotion, cognition, state, or condition. The roots of the word shame are thought to derive from an older word meaning "to cover"; as such, covering oneself, literally or figuratively, is a natural expression of shame.

Nineteenth century scientist Charles Darwin, in his book The Expression of the Emotions in Man and Animals, described shame affect as consisting of blushing, confusion of mind, downward cast eyes, slack posture, and lowered head, and he noted observations of shame affect in human populations worldwide. He also noted the sense of warmth or heat (associated with the vasodilation of the face and skin) occurring in intense shame.

A "sense of shame" is the consciousness or awareness of shame as a state or condition. Such shame cognition may occur as a result of the experience of shame affect or, more generally, in any situation of embarrassment, dishonor, disgrace, inadequacy, humiliation, or chagrin.

A condition or state of shame may also be assigned externally, by others, regardless of one's own experience or awareness. "To shame" generally means to actively assign or communicate a state of shame to another. Behaviors designed to "uncover" or "expose" others are sometimes used for this purpose, as are utterances like "Shame!" or "Shame on you!"

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