elongate vs longish

elongate

adj
  • Lengthened, extended, elongated; relatively long and slender. 

verb
  • To become long or longer by being pulled or stretched; to become elongated. 

  • To make long or longer by pulling and stretching; to make elongated. 

longish

adj
  • Somewhat long. 

  • It was a longish time before I received a reply to my letter. 

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