The term 'Canterbury Currency' refers to the currency used in the English city of Canterbury. The three crossword solutions for this term are 'POUNDS' (6 letters), 'POUND' (5 letters), and 'Nouns' (5 letters). POUNDS is the plural form of the word POUND, which is the official currency of the United Kingdom. Nouns are words that refer to people, places, things, or ideas. Therefore, the three crossword solutions for the term 'Canterbury Currency' refer to the POUND, the official currency of the United Kingdom, and the nouns associated with it.