Churns are a type of tool used to mix or aerate substances, such as cream or butter. The term 'CHURN' can be broken down into four words: SEETHES (7 letters), MOILS (5 letters), ROILS (5 letters), and STIRS (5 letters). SEETHES means to boil or seethe, MOILS means to move about in an agitated manner, ROILS means to move in a circular motion, and STIRS means to move a substance around with a spoon or other utensil. Together, these words describe the action of churning, which is a process of mixing or aerating a substance by boiling, agitating, and stirring it.