1 someone who thinks they are better than people from a lower social class and dislikes being with them or doing the things they do: John wouldn't go to a football match, he's too much of a snob.
2 intellectual snob someone who thinks they are too intelligent to enjoy ordinary forms of entertainment
3 music/wine etc snob someone who knows a lot about music, wine etc and thinks their opinions are better than other people's
mania / メイニア / noun [countable, uncountable]
1 a very strong desire for something or interest in something, especially one that affects a lot of people at the same time [+ for]: A mania for a game called Nibs ran through the school. | religious/football/disco etc mania: The whole country is in the grip of football mania.
2 technical a serious mental illness
freak1 / フリーク / noun [countable]
1 bike/fitness/film etc freak informal someone who is so interested in bikes, fitness etc that other people think they are strange or unusual : Carrot juice is a favourite with health-food freaks.
2 someone who looks very strange or behaves in a very unusual way : Women who were good at physics used to be considered freaks.