This is the 11054th most frequent Spanish word.
duele
"Hurts" or "is painful."
In this sentence, 'duele' indicates physical pain or discomfort experienced in the head.
Me duele la cabeza.
My head hurts.
Here, 'duele' is used metaphorically to express emotional pain or sadness.
A ella le duele que su amigo no confiara en ella.
It hurts her that her friend didn't trust her.
In this sentence, 'duele' is used in a general context to refer to any physical pain one might feel.