dimensional, e.g.

Nippon Syllabary 's one of the characters: ni in Hiragana a.k.a. ni in Katakana;
two, as numerical number;

directional, e.g.

(law nine): 2-sided surface based computing (wormhole distance, wormhole length), also see: PHYSICS;

logical, e.g.

in Hiragana: two;

in Hiragana: 2 (e.g. a couple);

in Kanji: two;

Susumu (name); Tasuku (name); Tsugi (name);

2 lines are parallel to each other horizontally;
equal sign (=) character in programming e.g. ASCII (61);
two;
(x, y) coordinate a.k.a. two dimensional (2D);

numerological, e.g.

two;
2;

structural, e.g.

(law 1): in 2,3 dimensional imaginary hyper space environment, energy obeys C Sequence Number ( BF2 a.k.a. Brunching Factor 2) ... ;

2 lines ( x variable); both;

both to be together, a.k.a. couple; coupling; Also see: Monbusho level knowledge enhancement 2, idea ♯ 217; Couple; Coupling;

coexistence, also see: 2;

ni in Katakana, and Radical7 are written intentionally and precisely as upper horizontal line is shorter than lower horizontal line; the reason behind this DOMAIN 's written style (a.k.a. "Tarzan" Method, also see: Rakhine, ethnic tribe of Union of Myanmar) is that WHEN Homology_vs._Homotopy exists, kinetic energy e.g. antenna, iroColour, radio, solar, ... behaves exactly like ni in Katakana, and Radical7, regarding 2,3 dimensional hyper space environment only (e.g. 2 of 3 in the left side of );

IFF 3,4 dimensional hyper space environment (refer to WHOM have been granted by Shakya (a.k.a. Swastika) King only), start with Origin of Sound ... ; also see: Monbusho level knowledge enhancement, idea ♯ 157; THE ORIGIN OF SOUND;

IFF result is zero, after function MOD (number, divisor (2)) i.e. even number ... ; Radical260;
IFF result is one, after function MOD (number, divisor (2)) i.e. odd number ... ; also see: Radical1;