expect vs knock over

expect

verb
  • To consider obligatory or required. 

  • To predict or believe that something will happen 

  • To consider reasonably due. 

  • To be pregnant, to consider a baby due. 

knock over

verb
  • To bump or strike something in such a way as to tip it 

  • To rob; to stage a heist of. 

How often have the words expect and knock over occurred in a corpus of books? (source: Google Ngram Viewer )