The term 'final part' can refer to the END of something, and there are several words that can be used to describe this concept. The three-letter word 'END' is a simple way to refer to the final part of something, while the six-letter words 'ENDING, ' 'tagend, ' and 'tailend' are more specific terms that can be used to refer to the conclusion of something. Finally, the eight-letter word 'endpiece' is a more poetic way to refer to the last part of something.