The term 'both' can be represented by four letter words in a crossword puzzle. The word 'ours' is a possessive pronoun that is used to refer to something that belongs to two or more people. The word 'NOON' is a time of day that occurs exactly 12 hours after midnight. Finally, the word 'MELD' is a verb meaning to combine or blend together two or more things. Therefore, the term 'both' can be represented by the words 'ours, ' 'NOON, ' and 'MELD, ' all of which have four letters.