Commensalism - Commensalism, in biology, a relationship between individuals of two SPECIES in which one species obtains food or other benefits from the other without either harming or benefiting the latter.Parasitism - A relationship between two ORGANISMS in which one organism (the parasite) benefits and the other (the host) is harmed. Parasites derive nutrition from their host and may also gain other benefits such as shelter and a habitat in which to grow and reproduce.Camouflage - The definition of camouflage refers to the process of making something less obvious such as MILITARY dress that allows soldiers to blend in with their surroundings, animal coloring that allows animals to blend in and actions taken to hide your true intentions.Mutualism - Mutualism is DEFINED as a relationship that benefits two organisms, or it is defined as a doctrine in sociology where mutual aid is beneficial to society and the individual. ... An example of mutualism is a mutual relationship such as co-ownership of property where both parties benefit.