Phenomena
phenomenon
• noun (pl. phenomena) 1 a fact or situation that is observed to exist or happen, especially one whose cause is in question. 2 Philosophy the object of a person’s perception. 3 a remarkable person or thing.
— USAGE The word phenomenon comes from Greek, and its plural form is phenomena. In standard English it is a mistake to treat phenomena as if it were a singular form.
— ORIGIN Greek phainomenon ‘thing appearing to view’.