relax vs unruffle

relax

verb
  • To calm down. 

  • To become loose. 

  • To become less severe or tense. 

  • To make something (such as codes and regulations) more lenient. 

  • To relieve (something) from stress. 

  • To make something less severe or tense. 

  • To make something loose. 

  • To become more lenient. 

unruffle

verb
  • To calm down. 

  • To calm or soothe (a person). 

  • To remove ruffles from; to make smooth. 

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