extempore vs make-do

extempore

noun

  • Something improvised. 

adj

  • Carried out with no preparation; impromptu. 

adv

  • Without preparation; extemporaneously. 

make-do

noun

  • A temporary or makeshift expedient. 

adj

  • improvised, makeshift 

How often have the words extempore and make-do occurred in a corpus of books? (source: Google Ngram Viewer )