Pattern wiki:
[he martial arts related meaning of Pattern see Tae Kwon Do and Kata (Karate).A pattern is a form, template, or model (or, more abstractly, a set of rules) which can be used to make or to generate things or parts of a thing, especially if the things that are generated have enough in common for the underlying pattern to be inferred or discerned, in which case the things are said to exhibit the pattern. Pattern matching is the act of checking for the presence of the constituents of a pattern. The detection of underlying patterns is called pattern recognition.
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Ball wiki:
>For other uses, see Ball (disambiguation). A ball is a round object that is used most often in sports and games. Balls are usually hollow and spherical but can be other shapes, such as ovoid (only in a few special cases) or solid (as in billiards) and flat (as in ice hockey). In most games using balls, the play of the game follows the state of the ball as it is hit, kicked, or thrown by players.
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