abbreviations
"Tr" - a traditional, usually academic definition or symbol
"Ex-" - example

ABCDEFGHIJKLMNOPQRSTUVWXYZ

KEY
The specific, absolute position of the root of the TONIC chord (major or minor) within a given Tonal system (Window). Ex: In the Window of 2 sharps, we are either in the Key of D major or the Key of B minor.

KINETIC
Term applied to one or more note-values that are in a state of movement. The opposite of static.