There are a variety of synonyms for the term "single-leaf pine," which is a type of tree found in the western parts of North America. One common synonym is the "pinyon pine," which produces edible pine nuts and is often used in landscaping and as a shade tree. Another synonym is the "pinon pine," which is known for its fragrant resin and is used in traditional medicine and as a crafting material. The "Great Basin bristlecone pine" is also sometimes considered a synonym, as it is a slow-growing tree found in the same region as the single-leaf pine. Additionally, the "single-needle pinyon" and "one-needle pinyon" both refer to varieties of the same species as the single-leaf pine.