Acorn tree is a common term used to describe any type of tree that produces acorns. However, there are several other synonyms that can be used to describe these trees. One such term is oak tree, which is the most common type of tree that produces acorns. Other synonyms include beech tree, hazel tree, and chestnut tree. Some other lesser-known synonyms for acorn tree include willow oak, laurel oak, and water oak. No matter which term is used to describe them, these trees serve an important role in many ecosystems as a source of food for various animals and insects.