What is the romanized Korean word for "heart"?

Simjang (심장) is the Korean word for the physical heart, from the Sino-Korean hanja 心臟 meaning “heart organ.” By contrast, Aejeong (애정) means “affection/love,” Jeongsin (정신) means “mind/spirit,” and Segseu (섹스) is the loanword “sex,” so they’re not anatomical terms. A helpful tip: Korean often distinguishes physical vs. emotional “heart.” Use simjang for the organ, and maeum (마음) for feelings or “heart” in a figurative sense. Mnemonic: “SIM-jang” keeps you alive like a SIM card keeps a phone connected—both are essential cores.