introversion vs reticence

introversion

noun
  • A personality orientation towards the self and mental abstraction; behavior expressing such orientation. 

  • Arrangement of two similar words, lines, etc. to form the middle part of a structure. 

  • The action of turning one's thoughts upon internal or spiritual matters. 

  • A turning inward 

reticence

noun
  • Avoidance of saying or reluctance to say too much; discretion, tight-lippedness; (countable) an instance of acting in this manner. 

  • Followed by of: discretion or restraint in the use of something. 

  • Often followed by to: hesitancy or reluctance (to do something). 

  • A silent and reserved nature. 

verb
  • To deliberately not listen or pay attention to; to disregard, to ignore. 

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