combination vs unity

combination

noun
  • An association or alliance of people for some common purpose. 

  • One or more elements selected from a set without regard to the order of selection. 

  • A combination shot; a billiard; a shot where the cue ball hits a ball that strikes another ball on the table. 

  • A sequence of numbers or letters used to open a combination lock. 

  • The act of combining, the state of being combined or the result of combining. 

  • A rapid sequence of punches or strikes in boxing or other combat sports. 

  • A motorcycle and sidecar. 

  • An object formed by combining. 

unity

noun
  • Oneness; the state or fact of being one undivided entity. 

  • Any of the three classical rules of drama: unity of action (nothing should be admitted not directly relevant to the development of the plot), unity of place (the scenes should be set in the same place), and unity of time (all the events should be such as might happen within a single day). 

  • The peculiar characteristics of an estate held by several in joint tenancy. 

  • The form of consensus in a Quaker meeting for business which signals that a decision has been reached. In order to achieve unity, everyone who does not agree with the decision must explicitly stand aside, possibly being recorded in the minutes as doing so. 

  • Agreement; harmony. 

  • A single undivided thing, seen as complete in itself. 

  • The number 1 or any element of a set or field that behaves under a given operation as the number 1 behaves under multiplication. 

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