thawing vs weather condition

thawing and weather condition both are nouns.

Word	Noun	Adjective	Verb	Adverb
thawing	Yes	No	No	No
weather condition	Yes	No	No	No

As nouns, weather condition is a hypernym of thawing; that is, weather condition is a word with a broader meaning than thawing:

thawing: warm weather following a freeze; snow and ice melt
weather condition: the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation

Other hypernyms of thawing include atmospheric condition, conditions, weather.

thawing (noun)	weather condition (noun)
warm weather following a freeze; snow and ice melt	the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation
the process whereby heat changes something from a solid to a liquid