The term 'FALL FALLER' can be broken down into two crossword solutions: ACORN (5 letters) and LEAF (4 letters). The term 'FALL' is commonly used to refer to the season of autumn, which is characterized by the changing of leaves from green to red, orange, and yellow. The word 'faller' is a noun that refers to a person or thing that falls, such as an ACORN or a LEAF. Therefore, the two crossword solutions, ACORN and LEAF, are related to the term 'FALL FALLER' because they both represent objects that FALL during the autumn season.