performance

performance /pɚˈfoɚməns/ noun
plural performances
performance
/pɚˈfoɚməns/
noun
plural performances
Britannica Dictionary definition of PERFORMANCE
1 
[count]
a  : an activity (such as singing a song or acting in a play) that a person or group does to entertain an audience
— sometimes used figuratively
b  : the way an actor performs a part in a play, movie, etc.
2 
somewhat formal : the act of doing a job, an activity, etc.
[noncount]
[singular]
3 
: how well someone or something functions, works, etc. : how well someone or something performs
[count]
[noncount]
— see also high performance
4 
[singular] British, informal : an act that requires a lot of time and effort