insignificant vs picayunish

insignificant

adj
  • Without meaning; not signifying anything. 

  • Not significant; not important, inconsequential, or having no noticeable effect. 

picayunish

adj
  • Petty; paltry; mean. 

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