挟持、把持、保持

Forceps（鉗子）:
"Forceps (plural forceps^[1][2] or considered a plural noun without a singular, often a pair of forceps;^[3][4] the Latin plural forcipes is no longer recorded in most dictionaries)^[1][2][3][4] are a handheld, hinged instrument used for grasping（把持、掴む）and holding（保持）objects. Forceps are used when fingers are too large to grasp small objects or when many objects need to be held at one time while the hands are used to perform a task. The term "forceps" is used almost exclusively within the medical field. Outside medicine, people usually refer to forceps as tweezers, tongs, pliers, clips or clamps." (Wikipedia)

Pliers（プライヤ、ペンチ）
"Pliers are a hand tool used to hold（保持）objects firmly, possibly developed from tongs used to handle hot metal in Bronze Age Europe.^[1] They are also useful for bending and compressing a wide range of materials. Generally, pliers consist of a pair of metal first-class levers joined at a fulcrum positioned closer to one end of the levers, creating short jaws on one side of the fulcrum, and longer handles on the other side.^[1] This arrangement creates a mechanical advantage, allowing the force of the hand's grip to be amplified and focused on an object with precision. The jaws can also be used to manipulate objects too small or unwieldy to be manipulated with the fingers.

Pincers are a similar tool with a different type of head used for cutting and pulling, rather than squeezing（挟持, compress）. Tools designed for safely handling hot objects are usually called tongs. Special tools for making crimp connections in electrical and electronic applications are often called "crimping（圧着）pliers"; each type of connection uses its own dedicated tool." (Wikipedia)

Pincers（やっとこばさみ、ペンチ）
"Pincers are a hand tool used in many situations where a mechanical advantage is required to pinch（挟持、挟む）, cut or pull an object. Pincers are first-class levers, but differ from pliers in that the concentration of force is either to a point, or to an edge perpendicular to the length of the tool. This allows pincers to be brought close to a surface, which is often required when working with nails.

Pincers are primarily used for removing objects (typically nails) out of a material that they have been previously applied to. Carpenter's pincers are particularly suited to these tasks.

If the pincers have perpendicular cutting edges, the pincers are often called end-nippers or end-cutters.

Pincers, often red-hot, have also been used as an instrument of torture^[1] since ancient Roman times or earlier.

Pliers are a similar tool with a different type of head used for squeezing（挟持、挟む）, rather than cutting and pulling."(Wikipedia)

Tweezers（ピンセット）
"Tweezers are small tools used for picking up（取る、採取、持ち上げる）objects too small to be easily handled with the human fingers. The word is most likely derived from tongs, pincers, or scissors-like pliers used to grab（掴む、捕捉、把持）or hold hot objects since the dawn of recorded history. In a scientific or medical context they are normally referred to as forceps."