Douglas Pine is a term used to describe a specific type of tree also known as the Douglas Fir. As a result, synonyms for this term are interchangeable with synonyms for Douglas Fir. Some synonyms for this term include Oregon Pine, Red Fir, and Douglas Spruce. These trees are common in the Pacific Northwest region of North America, including Oregon, Washington, and British Columbia. Douglas Pines are known for their large size, often growing up to 100 feet tall and six feet in diameter. They are also popular among lumber companies due to their strength and durability, making them a popular choice for construction purposes.