^"Etymology" does not just mean "basis in Greek or Latin." There are many other languages that words can be derived from. And etymology doesn't just mean making up imagined Latin or Greek derivations based on vague phonetic resemblances. It means doing actual research
into the history of words. If you're so fixated on word derivations, you should know that "-ology" means science or study. Science means testing your ideas, not just making stuff up and claiming it's fact.