Principal noun – The person who has the most important role in a play, movie, or TV show. Top dog and principal are semantically related In some cases you can use "Top dog" instead a noun "Principal". Nearby Words: principle, principally, principality, principe
Top dog noun – A person who is in charge. Principal and top dog are semantically related in leader topic. Sometimes you can use "Principal" instead a noun phrase "Top dog", if it concerns topics such as manager, female or male.
Principal Takao Todo encourages rivalry between the competitors, setting up a dangerous "K-Fighting" tournament where even the teachers can join in and settle once-and-for-all just who is the top dog on campus.