different between unthawed vs unthaw

English

un- +? thawed

unthawed (comparative more unthawed, superlative most unthawed)

Which has not been thawed: still frozen.
- 1883, W. Anderson Smith, Benderloch: or, Notes from the West Highlands (17 February 1881), page 312:
  For a time we struggled on, most intent upon evading the morasses; and staring at every patch of unthawed ice as on a treasure trove, until we reached a rocky knoll, on which we turned and looked downwards, from the bleak uninteresting moor to the dingy, featureless shores.

unthawed

un- +? thaw

unthaw (third-person singular simple present unthaws, present participle unthawing, simple past and past participle unthawed)

(transitive, intransitive) To thaw out, to unfreeze; to become soft (of something which had been frozen).
- 2009, Ann Mah, Kitchen Chinese: A Novel About Food, Family, and Finding Yourself:
  The food is honest and hearty, perfect for unthawing frozen limbs […]

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