The term 'EVERY NIGHT' can be broken down into two crossword solutions: 'NIGHTLY' (7 letters) and 'NIGHTTIME' (9 letters). 'NIGHTLY' is an adverb that means 'happening or done every night'. 'NIGHTTIME' is a noun that refers to the period of darkness between sunset and sunrise. Both words refer to the same concept, but 'NIGHTLY' is used to describe an action that occurs every night, while 'NIGHTTIME' is used to describe the time of day when it is dark.