画家
がか · gaka · JLPT N3 · noun
painter
🎨🖌️ 画家 = painting (画 ga) + specialist (家 ka): a painting expert
家 means house, but at the end of a word it marks a professional, like -ist in English: 作家 sakka is a writer, 音楽家 ongakuka is a musician. A 画家 is the person whose trade is 画, painting.
画 — hand 一 + field 田 + frame 凵
Originally a pictograph of a hand holding a brush drawing boundaries around a field, depicting the act of marking out land. The top once showed a brush (聿), and 田 represents the field being divided. Over time it came to mean 'to draw, paint' and also 'a stroke' in characters.
家 — roof 宀 + pig 豕
Originally a pictograph of a pig under a roof, since domesticated pigs were kept in or under the home in ancient China. Over time the meaning broadened from 'household' to 'family,' and by extension 'home' or a specialist (as in 专家, 'expert').