In general, organisms can be categorized as either producers or consumers. Producers are organisms that can synthesize their own food from inorganic matter, such as plants that produce food through photosynthesis. Consumers, on the other hand, obtain energy by consuming other organisms. Omnivores are a subcategory of consumers that eat both plant and animal matter.
It is important to note that producers are never consumers, and consumers are never producers. An omnivore is a type of consumer, but it is not a producer.