applause · noun U /əˈplɔːz/
applause
C1 when people make a noise by clapping their hands to show they have enjoyed or approve of something
Dictionary example:
There was loud applause at the end of her speech.
Learner example:
Still the audience was very pleased, because they gave massive applause at the end. (Certificate in Advanced English; C1; Dutch)
round of applause
C2 when people clap
Dictionary example:
The crowd gave him a huge round of applause.
Learner example:
It was unbelievable, there was a round of applause and some people couldn't help crying. (Certificate of Proficiency in English; C2; Turkish)