im pretty sure that its Betty Comden and Adolph Green

Applause (Latin 'applaudere', to strike upon, clap) is primarily the expression of approval by the act of clapping, or striking the palms of the hands together, in order to create noise. Audiences are usually expected to applaud after a performance, such as a musical concert, speech, or play.

Applause is a noun.

A group of people clapping........ie. to give applause- to clap(a round of applause)

To applause (verb) is "applaudir" in French; a round of applause is 'des applaudissements'.