“Tranquility” and “tranquillity” are both correct spellings of the same word, which means a state of peace and calm. The difference between them lies in their usage in different forms of English:
- Tranquility: This is the preferred spelling in American English. It’s more commonly used in the United States.
- Tranquillity: This spelling is favored in British English. It’s more commonly used in the United Kingdom and other countries where British English is the standard.
Both spellings are correct and interchangeable, with the choice depending primarily on the variety of English being used or the regional spelling preference.