com·men·sal·ism / come.en.sale.ism /
noun – a type of symbiotic relationship, typically where one organism is benefited while the other is neither helped nor harmed.
study note: some believe that no symbiotic relationship can be completely commensal, both organisms are affected in some way. It's up to you to decide!
related forms of commensalism: commensal (the practice of commensalism), commensalist (an organism displaying commensalism)
commensalism in a sentence: Is there any true commensal relationship?
examples of commensalism: birds & trees, ants & aphids, certain jellyfish & other marine life