When someone mentions "The Big 5" and "oceans," psychologists are thinking about personality traits (openness, conscientiousness, extraversion, agreeableness, neuroticism) while paleontologists are mentally cataloging extinct marine reptiles from the Mesozoic era. It's the scientific equivalent of ordering a "regular coffee" in Boston vs. New York. Same words, completely different worlds. The facial expressions say it all—one field is smugly thinking about human behavior questionnaires while the other is geeking out over mosasaurs and plesiosaurs.