The term 'lessen the pain' can be expressed in two ways: 'ALLEVIATE' (9 letters) and 'EASE' (4 letters). ALLEVIATE means to make something less severe or intense, while EASE means to make something easier or more bearable. Both terms refer to reducing the amount of pain or discomfort one is feeling. Therefore, the crossword solutions for the term 'lessen the pain' are 'ALLEVIATE' and 'EASE', which both refer to making a painful situation more bearable.