Peaceful relaxation is a state of being that can be achieved through activities such as meditation, yoga, and spending time in nature. It is characterized by a sense of calmness and tranquility, and can be beneficial for both physical and mental health. The crossword solutions for the term 'peaceful relaxation' are 'EASE' and 'REST', both of which are four-letter words. EASE is defined as the absence of difficulty or effort, while REST is defined as a period of inactivity or repose. Together, these two words capture the essence of peaceful relaxation.