× — Direction / Multiply

×Y gives direction: zero, or Y÷|Y. Pervasive.

ׯ3 0 4           ⍝ ¯1 0 1
×0j2              ⍝ 0j1

X×Y multiplies. Pervasive.

2x×1x 2x 3x       ⍝ 2ₓ 4ₓ 6ₓ