Which word refers to a mountain ridge?

The term that refers to a mountain ridge is "ridge." A ridge is a long, narrow elevated landform, often forming the crest of a mountain range, where two slopes meet. It is the natural feature that represents the line or area of high ground extending over a long distance, usually characterized by a continuous elevated position.

The other terms have distinct meanings: "peak" refers to the highest point of a mountain; "base" denotes the bottom or lowest part of a mountain; and "summit" signifies the very top or highest point of a mountain or hill. Understanding these definitions helps clarify why "ridge" is the term that accurately describes a mountain ridge.