convenience vs hassle

convenience

verb
  • To make convenient 

noun
  • Any object that makes life more convenient; a helpful item. 

  • The quality of being convenient. 

  • A convenient time. 

hassle

adj
  • hassling; hasslesome 

noun
  • Trouble, bother, unwanted annoyances or problems. 

  • A fight or argument. 

  • An action which is not worth the difficulty involved. 

verb
  • To engage in a mock dogfight. 

  • To pick a fight or start an argument with. 

  • To trouble, to bother, to annoy. 

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