balancing a ball on one 's nose is a kind of trick
self_balancing is not balancing. nose has not two_holes_called_nostrils playing_shovel_board is not playing_game. nose is skill. self_balancing is balancing. nose has two_holes_called_nostrils breathing_through_nose is not one_way_to_control_breathing. nose is not skill. breathing_through_nose is one_way_to_control_breathing. playing_shovel_board is playing_game.