The word "pang" refers to a sharp, sudden pain, especially an emotional one. There are several synonyms for this word that can be used interchangeably, depending on the context. Some of the common synonyms are twinge, throb, ache, cramp, spasm, and sting. Twinge gives the sense of a sudden, short-lived pain. Throb is more focused on the rhythmic pulsation of pain. Ache is a prolonged, dull pain that lingers for a while. Cramp is a spasm-like pain that causes tightness in the muscles. Spasm denotes an involuntary contraction of muscles, while sting refers to a sharp, burning sensation that follows a wound or a bite.