Answer;
Symbiosis
Symbiosis is the term that includes Commensalism , mutualism and parasitism.
Explanation;
Parasitism is a symbiotic relationship does one organism benefit while the other organism is harmed.
Commensalism is a symbiotic relationship between two species in which one benefits, and other is neither harmed nor helped.
Mutualism on the other hand is where both organisms involved from each other. Example is the relationship between an Oxpecker and the rhinoceros or Zebra.