Theatron (cavea)
seating for audience
Orchestra
dancing floor for chorus
Parodos
ramp for chorus' entry and exit
Proscenium
stage
Skene
backdrop
Prologue
announcement of a subject
Parodos
entrance of choruses
Episodes
3 to 6 "acts" (dialogue among soloists) alternating with several stasima
Stasima
choral odes
Strophe
turn
Antistrophe
counter-turn
Kommos
dialogue between actors and chorus
Exodos
exit of chorus
3 unities
time, place, action
Mimesis
imitation
Catharsis
(purification) or negative emotions especially pity or fear
Protagonist
main sufferer
Hubris
arrogant pride
Hamartia
fault, crime, sin
Anagnorisis
recognition
Peripeteia
reversal
Machina
crane