observation vs question

observation

noun
  • A regime under which a subject is routinely observed. 

  • The act of noting and recording some event; or the record of such noting. 

  • A remark or comment. 

  • A realization of a random variable. 

  • A judgement based on observing. 

  • Performance of what is prescribed; adherence in practice; observance. 

  • Philosophically as: the phenomenal presence of human being existence. 

  • The act of observing, and the fact of being observed (see observance) 

question

noun
  • A subject or topic for consideration or investigation. 

  • A sentence, phrase or word which asks for information, reply or response; an interrogative. 

  • A proposal to a meeting as a topic for deliberation. 

  • A doubt or challenge about the truth, accuracy, or validity of a matter. 

verb
  • To ask a question or questions; inquire or seek to know; examine. 

  • To ask questions of; to interrogate; to ask for information. 

  • To raise doubts about; have doubts about. 

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