left vs residual

left

noun
  • The left side or direction. 

  • A wave breaking from left to right (viewed from the shore). 

  • The left-wing political parties as a group; citizens holding left-wing views as a group. 

  • A punch delivered with the left fist. 

  • The left hand or fist. 

adj
  • Designating the bank of a river (etc.) on one's left when facing downstream (i.e. facing forward while floating with the current); that is, the north bank of a river that flows eastward. If this arrow: ⥲ shows the direction of the current, the tilde is on the left side of the river. 

  • Designating the side of the body toward the west when one is facing north; the side of the body on which the heart is located in most humans; the opposite of right. This arrow points to the reader's left: ← 

  • Left-wing; pertaining to the political left. 

adv
  • Towards the left side. 

  • On the left side. 

  • Towards the political left. 

residual

noun
  • A spiritual presence left behind in a place as a result of a person's death or some other significant event. 

  • A remainder left over at the end of some process. 

  • the difference between the observed value and the estimated value of the quantity of interest 

  • Payments made to performers, writers and directors when a recorded broadcast is repeated. 

adj
  • Of, relating to, or remaining as a residue; left over. 

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