The term 'FUTURE OAK' is composed of two words, 'FUTURE' and 'OAK'. The first word, 'FUTURE', is a noun that refers to the time that is yet to come. The second word, 'OAK', is a type of tree that is known for its strength and longevity. Together, the two words form a metaphor for something that will last for a long time and be strong in the FUTURE. The crossword solution for this term is 'ACORN', which is the seed of an OAK tree. An ACORN is a symbol of potential and growth, and it is often used to represent the idea of something that will become great in the FUTURE.