Usage patterns
〈人〉が芝居を見るto watch a play
I watched a kabuki play together with a friend.
芝居をするto put on a play, or (figuratively) to put on an act / pretend
He pretended to be surprised and put on an act.
芝居に出るto appear in / act in a play
She appeared in a play at her high school's cultural festival.
芝居がうまいto be good at acting / good at pretending
She's good at acting, so she looked like she was really in trouble.
Expressions
芝居を打つplay a trick; put on a false show; deceive · put on a play; present a play