extension vs sketch

extension

noun
  • Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension. 

  • The set of tuples of values that, used as arguments, satisfy the predicate. 

  • A file extension. 

  • University programs that are targeted at the broader (usually adults) community whose participants are not full-time enrolled students. 

  • That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension") 

  • A part of a building that has been extended from the original 

  • semantic widening, broadening of meaning 

  • An optional software component that adds functionality to an application. 

  • A simple offensive action, consisting of extending the weapon arm forward. 

  • The act of extending; a stretching out; enlargement in length, breadth, or time; an increase 

  • The operation of stretching a broken bone so as to bring the fragments into the same straight line. 

  • The state of being extended 

  • A written engagement on the part of a creditor, allowing a debtor further time to pay a debt. 

  • A numerical code used to specify a specific telephone in a telecommunication network. 

  • An exercise in which an arm or leg is straightened against resistance. 

  • A kind of derivative morpheme applied to verbs in Bantu languages. 

sketch

noun
  • 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 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 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. 

verb
  • To make a brief, basic drawing. 

  • To describe briefly and with very few details. 

adj
  • Sketchy, shady, questionable. 

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