| A | B |
| opera | a form of musical theater, begun in Italy, where all of the words are sung |
| operetta | a form of musical theater with light plots and with some spoken lines |
| comic opera | a humorous and satirical operetta |
| musical revue | a group of songs linked together by very little plot |
| musical comedy | a form of musical theater with comedy and music and better characters and plot than comic opera |
| musical play | a full play with music that advances the plot and reveals character |
| crossover | a period of music to mask a scene change, when character come across in front of a pulled curtain |
| change music | music played over a scene change with no actors present |
| spoof | a light parody |
| satires | plays that criticize certain aspects of human society using humor |
| concept musicals | musicals based on an idea and not on a story |
| hanging plot | a diagram of where the lights will be hung and focused |
| storage plot | a design for storing scenery |
| backlighting | lighting an actor from behind for a certain shadow effect |
| reversibles | costumes that can turn inside-out for a different color |
| coordinates | different costumes piece that can be interchanged to create different looks |
| combo | a group of musicians, smaller than an orchestra who play the music during a production |