hierarchy vs ladder

hierarchy

noun
  • A social, religious, economic or political system or organization in which people or groups of people are ranked with some superior to others based on their status, authority or some other trait. 

  • A body of authoritative officials organized in nested ranks. 

  • Any group of objects ranked so that every one but the topmost is subordinate to a specified one above it. 

ladder

noun
  • The hierarchy or ranking system within an organization, such as the corporate ladder. 

  • A length of unravelled fabric in a knitted garment, especially in nylon stockings; a run. 

  • A frame, usually portable, of wood, metal, or rope, used for ascent and descent, consisting of two side pieces to which are fastened rungs (cross strips or rounds acting as steps). 

  • A series of stages by which one progresses to a better position. 

  • In the game of go, a sequence of moves following a zigzag pattern and ultimately leading to the capture of the attacked stones. 

verb
  • Of a knitted garment: to develop a ladder as a result of a broken thread. 

  • To ascend (a building, a wall, etc.) using a ladder. 

  • To arrange or form into a shape of a ladder. 

  • To close in on a target with successive salvos, increasing or decreasing the shot range as necessary. 

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