冗
ジョウ

superfluous, uselessness

JLPT1 G7 S4 F1782

The relevant seal inscription form shows two curving lines serving as an abstract representation of the idea of movement through open space + 冖 cover → move through the open area of a covered space → *superfluity* (← space other than that necessary in which to move). There is no etymological connection with 几.

[Full Kanji Etymology List]