The trophic level describes what level you are in the food chain. The food chain is just a simplified version of the food web, which lays out where each organism lies in the flow of energy through an environment. Consumers derive energy from other organisms, and producers derive energy from abiotic sources, mainly the sun. One term that would encapsulate all the other terms is food web, because you can get all of this information from that one diagram.
Trophic level: the feeding level of an organism in a food web or chain. Food web: a diagram showing a series of interconnected food chains and the flow of energy through an ecosystem. Food chain: a diagram showing the flow of energy from one trophic level to the next. E.g. Consumer or decomposed Consumer: an organism which feeds on other organisms to obtain its nutritional requirements (part of a food web/chain). Producer: an organism capable of trapping the suns energy and converting it to sugar in the process of photosynthesis. Therefore the term food web is the term used to include all of the above. hope this helps, :)
