Red-gum is a type of hardwood tree that is native to Australia. It is known for its distinct red color and is often used in furniture making for its durability and resistance to decay. While the term "red-gum" is commonly used to refer to this tree, there are several other synonyms for it. These include "Eucalyptus camaldulensis," "river gum," "Murray red gum," "red river gum," and "giant gum." Each of these synonyms represents a slight variation or specific strain of the red-gum tree. Regardless of the name used, red-gum remains a popular and valuable natural resource in Australia.