The Latin word for “whale,” “cetus,” joins with “-ology,” the Latin suffix for “the study of a subject.” Cetology is the study of whales, dolphins, and porpoises, so a person who is committed to studying these animals is a cetologist. In academics, an almost limitless amount of words are paired with “-ology,” including “biology” (“the study of life”), “psychology” (“the study of how people think”), and “entomology” (“the study of insects”).