Non-subsistence refers to activities or actions that are not related to basic survival needs like food and shelter. There are several synonyms for the term including non-survival, non-essential, and non-urgent. Non-survival implies activities that are not necessary for survival, but are indulged in for luxuries. Non-essential refers to activities that are not necessary, but are undertaken for convenience or pleasure. Non-urgent indicates that actions do not require immediate attention or intervention. Other synonyms include non-necessary, non-crucial, and non-pressing. These words are useful when describing actions or activities that are not related to basic needs, but are still important to accomplish.