succinctness vs yackety-yak

succinctness

noun

  • The property of being succinct, conciseness. 

yackety-yak

verb

  • To talk pointlessly and uninterruptedly. 

noun

  • prolonged chatter; uninterrupted, idle talk; gossip 

How often have the words succinctness and yackety-yak occurred in a corpus of books? (source: Google Ngram Viewer )