do up vs untie

do up

verb
  • To fasten (a piece of clothing, etc.); to tighten (a nut etc.) 

  • To beat up; to physically assault. 

  • To execute a task or performance. 

  • To pack together and envelop; to pack up. 

  • To redecorate (a room, etc.); to make improvements to a home or domestic property. 

untie

verb
  • To loosen, as something interlaced or knotted; to disengage the parts of. 

  • In the Perl programming language, to undo the process of tying, so that a variable uses default instead of custom functionality. 

  • To resolve; to unfold; to clear. 

  • To become untied or loosed. 

  • To free from fastening or from restraint; to let loose; to unbind. 

How often have the words do up and untie occurred in a corpus of books? (source: Google Ngram Viewer )