Radicals ( Radical30) two strokes in Kanji;

dimensional, e.g.

1D, one dimension (e.g. to the right);

Chinese Romanization ( cr) ;

www.jisho.org radical number 27 ... ;

directional, e.g.

;

logical, e.g.

cliff;
factory; mill; plant; yard;
wild goose;

numerological, e.g.

2;

structural, e.g.

time based characteristic of frequency band, e.g. bandwidth ... ;

Radicals;