cartoon – n. a movie or television program made by photographing a series of drawings

in a snap – phrase. done, made, or carried through suddenly or without thinking

bubble – n. a tiny, round ball of air or gas inside a liquid

spectrum – n. a complete range of different opinions, people, etc.

diagnose – v. to recognize (something, such as a disease) by signs and symptoms

introduce – v. to make (someone) known to someone else by name

lesson – n. an activity that you do in order to learn something

backpack – n. chiefly US : a bag for carrying things that has two shoulder straps and is carried on the back