indifferent vs wallflower

indifferent

noun
  • A person who is indifferent or apathetic. 

adj
  • Indicating or reflecting a lack of concern or care. 

  • Ambivalent; unconcerned; uninterested, apathetic. 

  • Having no preference. 

  • Mediocre (usually used negatively in modern usage). 

  • Not making a difference; without significance or importance. 

  • Being in the state of neutral equilibrium. 

wallflower

noun
  • Any person who is socially awkward, shy, or reserved. 

  • A person who does not dance at a party, due to shyness or unpopularity; by extension, anyone who is left on the sidelines while an activity takes place. 

  • Any of several short-lived herbs or shrubs of the Erysimum genus with bright yellow to red flowers. 

  • Gastrolobium grandiflorum, a poisonous bushy shrub, endemic to Australia. 

verb
  • To stand shyly apart from a dance, waiting to be asked to join in. 

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