What do we call a brush?

What we call a brush depends on its type, use, and context, as there are many different kinds of brushes with specific names. Generally, we call a brush by its function. A brush for cleaning teeth is called a toothbrush. A brush for hair is called a hairbrush. A brush for painting walls is called a paintbrush. A brush for fine art is called an artist brush, watercolor brush, or oil brush. A brush for makeup is called a makeup brush, with subtypes like foundation brush, blush brush, or eyeshadow brush. A brush for scrubbing floors is called a scrub brush. A brush for sweeping is called a broom or hand brush. A brush for bottles is called a bottle brush. In industrial contexts, brushes are called wire brush, rotary brush, or power brush. As vegetation, dense shrubs are called brush, scrub, underbrush, or chaparral. As a verb phrase, to brush can be called sweeping, grooming, or painting. So we call a brush by adding a descriptor of its purpose before the word brush, such as tooth, hair, paint, scrub, or bottle. The generic term brush covers all tools with bristles, but specific names clarify use, such as nail brush, dust brush, or chimney brush.