diagram vs groundplan

diagram

noun
  • A plan, drawing, sketch or outline to show how something works, or show the relationships between the parts of a whole. 

  • A functor from an index category to another category. The objects and morphisms of the index category need not have any internal substance, but rather merely outline the connective structure of at least some part of the diagram's codomain. If the index category is J and the codomain is C, then the diagram is said to be "of type J in C". 

  • Electrical diagrams show device interconnections. 

  • A graph or chart. 

verb
  • To schedule the operations of a locomotive or train according to a diagram. 

  • To represent or indicate something using a diagram. 

groundplan

noun
  • A framework or pattern showing the form of something, without all the details. 

  • A diagram showing the physical layout of a set, especially the placement of structures on the stage, as opposed to items on the walls or suspended from the ceiling. 

  • A hypothetical anatomical form from which members of a clade are adaptations. 

  • A diagram, usually to scale, showing the layout of the ground level of a building or other physical structure; floorplan. 

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