心 means heart; mind; intention; center; core; soul; spirit. Typically, if you see 心 or 忄(心’s component form) in a word, you know the word has something to do with emotions or the act of thinking. In Korean, it is 마음 ( mind, heart) or 생각 (think, idea).
Now some Korean vocabulary words for me to learn.
충성심 a sense of loyalty
도덕심 public morality
자부심 pride, self–confidence
Here is a poem for you:
心如明鏡台 The soul is like a mirror bright;
時時勤拂拭 Take heed to keep it always clean,
莫使惹塵埃 And let no dust collect on it. Shen-hsiu