"How to say [画画] in English?"
"Painting" is the direct translation for "画画" in English. However, if you are referring to the activity of creating art or drawing, you could use phrases like "do artwork", "create a sketch", "draw a picture", or "express oneself through art". If it's about the tools used in painting, you might use words like "paintbrush", "canvas", "watercolors", "acrylic", etc.
