await vs wait on

await

verb
  • To wait for. 

  • To expect. 

  • To wait; to stay in waiting. 

  • To serve or attend; to wait on, wait upon. 

  • To watch, observe. 

  • To be in store for; to be ready or in waiting for. 

wait on

verb
  • To wait for (a person). 

  • To provide a service to (someone); to act as a servant to (someone); to serve (someone) as a waiter or waitress in a restaurant. 

  • To wait for (a thing, or an event to take place). 

  • To fly above its master, waiting till game is sprung. 

  • To be in store for (someone). 

How often have the words await and wait on occurred in a corpus of books? (source: Google Ngram Viewer )