different between jumbling vs tumbling

English

jumbling

jumbling (plural jumblings)

The act by which something is jumbled or confused.
- 1730, Jonathan Swift, A Panegyrick on the Dean
  Nor is your Skill, or Labour less, / When bent upon some smart Lampoon, / You toss and turn your Brain till Noon; / Which, in its Jumblings round the Skull, / Dilates, and makes the Vessel full […]

tumbling

tumbling (plural tumblings)

The act of something that tumbles.
- 1677, James Howell, The Pre-eminence and Pedigree of Parlement
  These so many conquests must needs bring with them many tumblings and tossings, many disturbances and changes in government […]
- 1838, Colburn's New Monthly Magazine and Humorist (page 176)
  Having feasted our souls with this sublime spectacle, we ministered to the wants of the body by a plentiful breakfast, and about noon we commenced the descent, rendered ludicrous enough by various tumblings and sprawlings on the part of the more inexpert mountaineers.

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