different between pyrotechnician vs pyrotechnist

English

pyrotechnician (plural pyrotechnicians)

pyrotechnic +? -ist, from pyro- +? technic

pyrotechnist (plural pyrotechnists)

(dated) A pyrotechnician: person skilled in the manufacture or setting off of fireworks and firework displays.
- 1862, The Statutes at Large and Treaties of the United States of America
  That the Secretary of the Navy be, and he is hereby, authorized to appoint a pyrotechnist for the service of the navy, […]
(figuratively) One who demonstrates a brilliant display, as of rhetoric or wit, or of virtuosity in the performing arts.
- 2006, Michel Weber, Nicholas Rescher, Whitehead's Pancreativism
  "It is thus the pyrotechnist (should we say demiurge?) who gives meaning to the so to speak explosive effervescences that are weaving the world of the spectator"

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