progress - moving toward a goal or development

anxious - to be worried, concerned, or nervous

cozy - snugly warm and comfortable

trapeze - a short horizontal bar suspended by two parallel ropes that acrobats can fly or swing from, usually at a circus

negative - to be harmful, unpleasant, or not positive

leapfrog - a children's game in which players vault over each other's stooped backs

gills - organs that allow fish to breathe underwater