different between wiggler vs giggler

English

wiggle +? -er

wiggler (plural wigglers)

Anything that wiggles.
The larva of a mosquito.
(Southern US) An earthworm.
(physics) A magnet designed to make a beam of charged particles follow a curving path in an accelerator.

giggle +? -er

giggler (plural gigglers)

A person who giggles.
- 1918, Carl Sandburg, "Band Concert" in Cornhuskers, p. 24, [1]
  Band concert public square Nebraska city. Flowing and circling dresses, summer-white dresses. Faces, flesh tints flung like sprays of cherry blossoms. And gigglers, God knows, gigglers, rivaling the pony whinnies of the Livery Stable Blues.
- 1967, Nadine Gordimer, "An Intruder" in Livingstone's Companions, New York: Viking, 1971, p. 83,
  She was not a giggler, despite her extreme youth, and she smiled the small slow smile that men brought to her face without knowing why.

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