hap vs undress

hap

verb
  • To wrap, clothe. 

  • To happen to. 

  • To happen; to befall; to chance. 

noun
  • Any of the cichlid fishes of the tribe Haplochromini. 

  • A wrap, such as a quilt or a comforter. Also, a small or folded blanket placed on the end of a bed to keep feet warm. 

  • Happenings; events; goings-on. 

undress

verb
  • To take the dressing, or covering, from. 

  • To remove the clothing of (someone). 

  • To remove one's clothing. 

  • To remove one’s clothing. 

  • To strip of something. 

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

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

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

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