The term "Yellowjacket" refers to a type of wasp belonging to the family Vespidae. These insects are known for their distinctive yellow and black coloration and are often found in North America. Yellowjackets are social insects that build nests, usually in the ground or in sheltered areas, and can be aggressive when defending their colonies. Yellowjackets are omnivorous, feeding on a variety of foods, including insects, sugary substances, and human food. They play a role in the ecosystem by helping to control pest populations. However, their stings can be painful and may cause allergic reactions in some individuals, making caution important when encountering them.