Pliers, Pincers and concrete nippers

Pliers, hand-operated tool for holding and gripping small articles or for bending and cutting wire. Slip-joint pliers have grooved jaws, and the pivot hole in one member is elongated so that the member can pivot in either of two positions in order to grasp objects of different size in the most effective way.

Pincers are a hand tool used in many situations where a mechanical advantage is required to pinch, cut or pull an object. ... This allows pincers to be brought close to a surface, which is often required when working with nails.

Concrete nippers are used to tie rebar wire around rebars - twisting the wire around the rebars, and then cutting the left over. Rebars are used prior to pouring the concrete to strengthen the concrete, hence the tool name.