label / labile [ˈlɛibəl]
label – n. & v. – n. – 1. a piece of paper, card, or other material attached to an object to identify it or give instructions or details concerning its ownership, use, nature, destination, etc.; tag; 2. a brief descriptive phrase or term given to a person, group, school of thought, etc.; 3. a word or phrase heading a piece of text to indicate or summarize its contents; 4. a trademark or company or brand name on certain goods, especially on gramophone records; 5. Computing a group of characters appended to a statement in a program to allow it to be identified; 6. Chemistry a radioactive element used in a compound to trace the mechanism of a chemical reaction; v. tr. – 1. to fasten a label to; 2. to mark with a label; 3. to describe or classify in a word or phrase; 10. to make (one or more atoms in a compound) radioactive, for use in determining the mechanism of a reaction
labile – adj. – 1. Chemistry (of a compound) prone to chemical change; 2. prone to instability, lapse, error, sin, a fall from innocence