In ancient Egypt, the Sphinx is a male statue of a lion with the head of a human, sometimes with wings. Most sphinxes however represent a king in his appearance as the sun god.
An anacronym is an acronym or an abbreviation so old or familiar that no one remembers what its letters stand for, such as BASIC or COBOL . By the way, an acronym is not just any abbreviation. It's a word that is short for other words, usually using their initial letters.
An eponym is a word that is derived from the proper name of a real or mythical person or place. Learn more, and read examples, here. An eponym is a word that is derived from the proper name of a real or mythical person or place. Adjectives: eponymic and eponymous. Over time, the name of a well-known person (such as Machiavelli, Italian Renaissance author of The Prince) may come to stand for an attribute associated with that person (in Machiavelli's case, cunning and duplicity).