Words that are usually used to express the unit of quantity of people, things or actions are called quantifiers. Such as head, horse, bar, etc.

A pencil box, a cupboard, a sofa, a robot, a gift box, a gear, a pillow, a cardboard box, a bag, a stone, an ancient town, a box and a wooden box. A basketball, a toy, a football, a volleyball, a tennis ball, a baseball, a dining table, a pen container, a paper box, an apple and an idea.