genxu -gex- gismu

x1 is a hook/crook [shape/form] of material x2.

See also kruvi, korcu.

In notes:

korcu
(adjective:) x1 is bent/crooked/not straight or direct/[twisted]/folded.
kruvi
x1 is a curve/turn/bend in x2, at locus x3, and defined by set of points/properties x4.
dadgenxu
x1 is a hanger for hanging x2
fipkalte
x1 fishes for fish species x2.