心身
しんしん · shinshin · JLPT N2 · noun
body
心 (heart/mind) + 身 (body): both read shin, so shin + shin = mind and body
Both kanji are read shin in this compound. Pairing heart-mind with body gives the word for mind and body together.
心 — pictograph of a heart with chambers and aorta
心 is a pictograph showing a stylized heart, with strokes representing the organ's chambers and the aorta at the top. Originally meaning the physical heart, it broadened to cover mind, feelings, and intentions, since ancient Chinese thought located thinking and emotion in the heart.
身 — pictograph of a pregnant body
身 is a pictograph originally depicting a person with a swollen belly, representing a pregnant woman in profile. Over time the meaning broadened from 'pregnancy' or 'torso' to refer to the body in general, and by extension oneself or one's person.