Alders are deciduous trees that are found all over the world. There are many synonyms for the word "alders" that can be used to describe these trees. Some common synonyms include alderwood, alnus, and alder tree. Other less common synonyms are black alder, gray alder, and white alder. Alders can grow up to 100 feet tall and have a distinct light-colored bark that can sometimes peel and form interesting patterns. They are also known for their unique catkins and cones that provide food and shelter for many different animals. Despite their many synonyms, these trees all share a common beauty that is appreciated by nature enthusiasts all over the world.