Marking pens are an essential tool used for writing or making marks on a variety of surfaces. They come in different types and colors, each designed for specific uses. Some synonyms for marking pens include highlighters, permanent markers, whiteboard markers, felt-tip pens, Sharpies, art pens, and paint markers. Highlighters are used to draw attention to specific text or information, while permanent markers are designed to write on surfaces such as metal, plastic, or glass. Whiteboard markers are commonly used on whiteboards, while felt-tip pens are ideal for writing on paper. Art pens and paint markers are used mostly for artistic purposes, such as drawing or painting.