| A | B |
| gelatins (gels) | transparent color sheets inserted into a fram on a floodlight |
| going up | forgetting one's lines during a rehearsal; blanking |
| green room | a room where actors relax before or after performances |
| house | another name for auditorium; place where audience sits |
| house light | auditorium lights used before or after play |
| illusion of first time | actor's ability to perform in a show over and over while making it appear new for the first time |
| improvisation | an impromptu scene where the actors make up the dialogue and action on the spot |
| instrument | term used to refer to a stage light |
| Method acting | an approach that calls on the actor to use personal experience and sense memory to develop a character |
| monologue | a long speech by one character |
| motivation | 1. specific reason for saying or doing something; 2. show character's desires |
| off book | having a part memorized so script is no longer needed |