Radicals ( Radical19) two strokes in Kanji;

dimensional, e.g.

table;

www.jisho.org radical number 16 ... ;

directional, e.g.

;

logical, e.g.

table;
windy;

numerological, e.g.

2;

structural, e.g.

IFF a bandwidth's frequency characteristic in time line, also see: Radical30;

Radicals;