separate vs undress

separate

noun
  • Anything that is sold by itself, especially articles of clothing such as blouses, skirts, jackets, and pants. 

  • A printing of an article from a periodical as its own distinct publication and distributed independently, often with different page numbers. 

adj
  • Apart from (the rest); not connected to or attached to (anything else). 

  • Not together (with); not united (to). 

verb
  • To disunite from a group or mass; to disconnect. 

  • To divide (a thing) into separate parts. 

  • To cause (things or people) to be separate. 

  • To divide itself into separate pieces or substances. 

undress

noun
  • Informal clothing for men, as opposed to formal or ceremonial wear. 

  • Partial or informal dress for women, as worn in the home rather than in public. 

  • Now more specifically, a state of having few or no clothes on. 

verb
  • To remove the clothing of (someone). 

  • To remove one's clothing. 

  • To remove one’s clothing. 

  • To strip of something. 

  • To take the dressing, or covering, from. 

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