here vs therein

here

adv
  • In, on, or at this place. 

  • In this context. 

  • To this place; used in place of the more dated hither. 

  • At this point in the argument, narration, or other, usually written, work. 

adj
  • Filler after a noun or demonstrative pronoun, solely for emphasis. 

  • Filler after a demonstrative pronoun but before the noun it modifies, solely for emphasis. 

intj
  • Used semi-assertively to offer something to the listener. 

  • Used for emphasis at the beginning of a sentence when expressing an opinion or want. 

noun
  • This time, the present situation. 

  • This place; this location. 

therein

adv
  • in that; in that place; in him/her/it. 

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