imperturbable vs subjective

imperturbable

adj
  • Not easily perturbed, upset or excited. 

  • Calm and collected, even under pressure. 

subjective

adj
  • Experienced by a person mentally and not directly verifiable by others. 

  • Describing conjugation of a verb that indicates only the subject (agent), not indicating the object (patient) of the action. (In linguistic descriptions of Tundra Nenets, among others.) 

  • Lacking in reality or substance. 

  • Pertaining to subjects as opposed to objects (A subject is one who perceives or is aware; an object is the thing perceived or the thing that the subject is aware of.) 

  • Resulting from or pertaining to personal mindsets or experience, arising from perceptive mental conditions within the brain and not necessarily or directly from external stimuli. 

  • As used by Carl Jung, the innate worldview orientation of the introverted personality types. 

  • Formed, as in opinions, based upon a person's feelings or intuition, not upon observation or reasoning; coming more from within the observer than from observations of the external environment. 

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