Face-Balanced vs. Toe Hang (Putter)
Two ways a putter's weight balances when you rest it on your finger, which usually tells you what kind of stroke it's designed for.
Balance the putter on a finger under the shaft: if the face points straight up, it's face-balanced, better suited to a straight-back-straight-through stroke. If the toe drops down toward the ground, it has toe hang, better suited to a stroke with some natural arc (opening on the backswing, closing through impact). Neither is "better", matching the putter's balance to your actual stroke shape is what matters.
More equipment terms
Loft
The angle of the clubface relative to a vertical plane, which controls launch angle and, largely, distance.
Lie Angle
The angle between the shaft and the ground when the club is soled correctly at address.
Bounce
The angle built into the sole of a wedge that helps it glide through sand or turf instead of digging in.
Offset
A design feature where the leading edge of the clubhead sits slightly behind the hosel.
Shaft Flex
How much a shaft bends during the swing, rated from Extra Stiff down to Ladies/Senior flex.
Cavity Back vs. Blade
Two iron head designs: cavity-back irons hollow out the back of the head for forgiveness, while blades (muscle backs) are more compact for feel and control.