different between stertorous vs stridulous

English

stertorous (comparative more stertorous, superlative most stertorous)

Sounding like snoring or snorting.
- 1920, Peter B. Kyne, The Understanding Heart, Chapter IX:
  Baldy had not moved since lying down, and his regular and somewhat sterterous breathing […] told Monica that he was alive and resting comfortably.

From Latin stridulus (“creaking, giving a shrill sound”), from stridere (“to utter an inarticulate sound, creak, grate”).

stridulous (comparative more stridulous, superlative most stridulous)

Emitting a particularly harsh or shrill sound.
- c. 1874, Henry Wadsworth Longfellow Ovid in Exile
  the Sarmatian boor driving his stridulous cart
(pathology) Relating to stridor.

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