A prehensile tail.
The pincers on ants and similar insects are called mandibles.
The human hand is made up of the palm, fingers, and thumb collectively. It is an essential tool we utilize for grasping, manipulating objects, and performing various tasks.
The indent in the thumb is called the "thenar cleft" and is a natural anatomical feature that helps with grip and flexibility of the thumb. It allows for a greater range of motion and strength when grasping objects.
Friction is holding immobile objects in place.
hemostat (also called a hemostatic clamp, arterial forceps or pean (after Jules-Émile Péan)), is a vital surgical tool used in almost any surgical procedure, usually to control bleeding. Forceps are a handheld, hinged instrument used for grasping and holding 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. See related link for Source
hemostat (also called a hemostatic clamp, arterial forceps or pean (after Jules-Émile Péan)), is a vital surgical tool used in almost any surgical procedure, usually to control bleeding. Forceps are a handheld, hinged instrument used for grasping and holding 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. See related link for Source
Animals with opposable thumbs and binocular vision are called primates. This group includes humans, apes, and monkeys. Their opposable thumbs and binocular vision are important adaptations for grasping and manipulating objects in their environment.
The meaty part below the thumb on your hand is called the thenar eminence. It is composed of muscle and fat that helps to move the thumb and provide strength and dexterity for gripping and grasping objects.
The ratio of water vapor in a volume of air relative to how much water vapor that volume of air is capable of holding is called relative humidity. It is expressed as a percentage and provides insight into how close the air is to being saturated with water vapor.
The finger of a claw is called a digit. It is the part of the claw that is used for grasping or manipulation.
gravity of course lol :)
The muscle action you are referring to is called adduction. This movement brings the thumb towards the palm of the hand. Adduction is an important function that allows for gripping and grasping objects with the hand.