different between excusation vs excubation

English

Etymology

Borrowed from Middle French excusation, from Latin exc?s?ti?, from exc?s? (“I excuse”).

Pronunciation

• IPA^(key): /??kskju?ze???n/

Noun

excusation (plural excusations)

1. (obsolete) The act of offering an excuse or apology, or the fact of being excused; an excuse, a defence.
   • 1646, Thomas Browne, Pseudodoxia Epidemica, I.2:

     And his goodness is to be admired, that it refuted not his argument in the punishment of his excusation, and only pursued the first transgression without a penalty of this the second.

Related terms

• excuse

English

Etymology

From Latin excubatio, from excubare (“to lie out on guard”), from ex (“out”) + cubare (“to lie down”).

Noun

excubation (uncountable)

1. (obsolete) A keeping watch; a vigil.
   • 1840, Philonauta, Naval Progression, or the Midshipman of the Old School

     Infinitely more so than the lucubrations
     Is the necessity there is for excubations.
     Hard's the duty in three watches—worse watch and watch—
     Expos'd to the elements without a thatch […]