constituent vs extrinsic

constituent

adj
  • constitutive or constituting; (politics) authorized to make a constitution 

  • being a part, or component of a whole 

noun
  • A resident of an area represented by an elected official, particularly in relation to that official. 

  • A part, or component of a whole 

  • A person or thing which constitutes, determines, or constructs 

  • A functional element of a phrase or clause 

  • A voter who supports a (political) candidate; a supporter of a cause. 

  • One who appoints another to act for him as attorney in fact 

extrinsic

noun
  • An external factor 

adj
  • external; separable from the thing itself; inessential 

  • not belonging to something; outside 

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