put together vs unite

put together

verb
  • To gather one's thoughts and come to conclusions. 

  • To assemble, construct, build, or formulate. 

adj
  • Stable and sound psychologically and hence in other respects; competent and responsible. 

  • In total. 

unite

verb
  • To bring together as one. 

  • To come together as one. 

noun
  • A British gold coin worth 20 shillings, first produced during the reign of King James I, and bearing a legend indicating the king's intention of uniting the kingdoms of England and Scotland. 

How often have the words put together and unite occurred in a corpus of books? (source: Google Ngram Viewer )