Any of various games played on a tabletop, usually with several balls, one or more of which is hit by a cue.
A two-player cue sport played with two cue balls and one red ball, on a snooker sized table.
An arrangement of players designed to facilitate certain plays.
An arrangement of moving troops, ships, or aircraft, such as a wedge, line abreast, or echelon. Often "in formation".
A structure made of two categories, two functors from the first to the second category, and a transformation from one of the functors to the other.
The act of assembling a group or structure.
The process during which something comes into being and gains its characteristics.
Something possessing structure or form.
A layer of rock of common origin.
A grouping of military units or smaller formations under a command, such as a brigade, division, wing, etc.
The process of influencing or guiding a person to a deeper understanding of a particular vocation.