Pivot is a French borrowing that slowly evolved grammatically in the English language. It began as a noun in the 14th century designating a shaft or pin on which something turns ("The chair turns on a pivot"). Later it was applied to any central person or thing around which action revolves. The noun then came to denote the action of turning about, oscillating, or balancing on or as if on a point ("the pivot of the golfer's body"; "a pivot in advertising strategy"). Adjectival use followed, always functioning as a synonym of the derivative pivotal describing things that are the pivot, that are vitally important or critical ("a pivot decision"). The word evolved yet again in the 19th century to become a verb indicating the act of turning, literally and figuratively, about a point ("The player pivoted and passed the ball"; "The plot pivots on revenge"). In wider extended use, it can imply a change of direction ("The company pivoted towards marketing remote learning tools and resources").