Example : They listened to ten different performances.
The play ran for 100 performances.
The frequent performances of the symphony testify to its popularity.

Synonyms : public presentation

Example : We congratulated him on his performance at the rehearsal.
An inspired performance of Mozart's C minor concerto.

Example : They criticised his performance as mayor.
Experience generally improves performance.

Synonyms : carrying into action, carrying out, execution

Example : They admired his performance under stress.
When Roger Maris powered four home runs in one game his performance merits awe.

Example : The power of its engine determines its operation.
The plane's operation in high winds.
They compared the cooking performance of each oven.
The jet's performance conformed to high standards.

Synonyms : functioning, operation