knock vs ping

knock

noun
  • An abrupt rapping sound, as from an impact of a hard object against wood. 

  • A sharp impact. 

  • A batsman's innings. 

  • A blow or setback. 

  • Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition; also, the characteristic knocking sound associated with it. 

  • Synonym of hunger knock 

  • A criticism. 

verb
  • To criticize verbally; to denigrate; to undervalue. 

  • To kick a ball towards another player; to pass. 

  • To rap one's knuckles against something, especially wood. 

ping

noun
  • A high-pitched, short and somewhat sharp sound. 

  • An email or other message sent requesting acknowledgement. 

  • Latency. 

  • A pulse of high-pitched or ultrasonic sound whose echoes provide information about nearby objects and vessels. 

  • A notification. 

  • A packet which a remote host is expected to echo, thus indicating its presence. 

  • A means of highlighting a feature on the game map so that allied players can see it. 

verb
  • To send an email or other message to someone in hopes of eliciting a response. 

  • To make a high-pitched, short and somewhat sharp sound. 

  • To flick. 

  • To cause something to bounce. 

  • To bounce. 

  • To emit a signal and then listen for its echo in order to detect objects. 

  • To call out audibly. 

  • To penalize. 

  • To send a packet in order to determine whether a host is present, particularly by use of the ping utility. 

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