map out vs sketch

map out

verb
  • To make explicit; to explain in detail. 

  • To create a map of an area. 

  • To organise a plan; to analyze a situation; to figure out a problem. 

sketch

verb
  • To describe briefly and with very few details. 

  • To make a brief, basic drawing. 

adj
  • Sketchy, shady, questionable. 

noun
  • A rough design, plan, or draft, as a rough draft of a book. 

  • A rapidly executed freehand drawing that is not intended as a finished work, often consisting of a multitude of overlapping lines. 

  • An amusing person. 

  • A brief, light, or informal literary composition, such as an essay or short story. 

  • A lookout; vigilant watch for something. 

  • A formal specification of a mathematical structure or a data type described in terms of a graph and diagrams (and cones (and cocones)) on it. It can be implemented by means of “models”, which are functors which are graph homomorphisms from the formal specification to categories such that the diagrams become commutative, the cones become limiting (i.e., products), the cocones become colimiting (i.e., sums). 

  • A humorous newspaper article summarizing political events, making heavy use of metaphor, paraphrase and caricature. 

  • A brief description of a person or account of an incident; a general presentation or outline. 

  • A brief musical composition or theme, especially for the piano. 

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