old hand vs shark

old hand

noun
  • A person who is experienced at a certain activity. 

shark

noun
  • A university student who is not a fresher that has engaged in sexual activity with a fresher; usually habitually and with multiple people. 

  • A sleazy and amoral lawyer. 

  • Someone who exploits others, for example by trickery, lies, usury, extortion. 

  • A very good poker or pool player. Compare fish (a bad poker player). 

  • A scaleless, predatory fish of the superorder Selachimorpha, with a cartilaginous skeleton and 5 to 7 gill slits on each side of its head. 

  • An ambulance chaser. 

  • A relentless and resolute person or group, especially in business. 

  • A person who feigns ineptitude to win money from others. 

verb
  • Of a university student who is not a fresher, to engage in sexual activity with a fresher, or to be at a bar or club with the general intention of engaging in such activity. 

  • To fish for sharks. 

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