The term redbug is commonly used to refer to the chigger, a tiny, red larva of a mite that infests the skin of humans and animals, causing intense itching and discomfort. However, "redbug" can also refer to other red-colored bugs, such as the boxelder bug or the red imported fire ant. Synonyms for redbug include chigger, harvest mite, berry bug, scrub itch mite, and jigger. It is important to note, however, that these synonyms may not always be accurate or interchangeable, as they may refer to different species of insects or mites.