different between mactation vs jactation

English

From Latin mact?ti?, from mact? (“I sacrifice, slaughter”).

mactation (countable and uncountable, plural mactations)

jactation (plural jactations)

A tossing or shaking of the body; physical agitation, especially while asleep or confined to bed by illness; jactitation.
The action of throwing.
- 1662: Thomas Salusbury, Galileo's Dialogue on the Two Chief World Systems (Dialogue Two)
  The projicient hath the stone in his hand, and with force and violence throws his arm, with which jactation the stone doth not move so much as the circumambient Air.
Boasting; bragging; showing off.

John A. Simpson and Edward S. C. Weiner, editors (1989) , “jactation”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, ?ISBN

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