different between operational vs inoperation

English

operation +? -al

operational (comparative more operational, superlative most operational)

Of or relating to operations, especially military operations.
Functioning and ready for use.
- 1977, George Lucas, Governor Tarkin in Star Wars,
  Princess Leia, before your execution, you will join me at a ceremony that will make this battle station operational. No star system will dare oppose the Emperor now.
Effective or operative.
Determined by means of practical measures.

From Latin inoperari (“to effect”), from in- (“in”) + operari (“to operate”).

inoperation (plural inoperations)

(obsolete) agency; influence; production of effects
- 1633, Joseph Hall, A paraphrase upon the hard texts of Scripture
  As no man can come to me but by the grace and lively inoperation of my Father, so none can attain to the perfect knowledge of the Father

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