different between purser vs pursuer

English

purse +? -er

purser (plural pursers)

The person responsible for handling the accounts on a ship, or for dealing with the passengers on a ship or aircraft.
- 1962, J. L. Austin, How To Do Things With Words
  If we offend against any of the other rules (A's or B's) - that is if we, say, utter the formula incorrectly, or if, say, we are not in a position to do the act because we are, say, married already, or it is the purser and not the captain who is conducting the ceremony, then the act in question, e.g. marrying, is not successfully performed at all, does not come off, is not achieved.

pursue +? -er

pursuer (plural pursuers)

One who pursues.
(Scotland, law) The party who initiates a lawsuit; a plaintiff.
- 1809, Faculty of Advocates (Scotland), Decisions of the Court of Sessions, from 1752 to 1808 (page 216)
  On his area the pursuer built a dwelling-house, of which the gable and garden-wall were mutual with his neighbour Smith […]

Send