net, net or net crown radical (no. 122)
网 centers on a woven mesh used for catching or holding things: a net. The radical sense is the same net shape used as a component in other characters.
网 is a pictograph of a net, with the outer 冂 suggesting the frame and the inner ノ丶 strokes representing the mesh.
The outer 冂 looks like the frame of a net, and the inner ノ丶 strokes are the crisscrossing threads. Together they form a net.
For モウ, imagine a fisherman mowing through the water with a net: mow -> モウ, and the net catches everything in its path.