sultriness vs conditions

sultriness and conditions both are nouns.

Word	Noun	Adjective	Verb	Adverb
sultriness	Yes	No	No	No
conditions	Yes	No	No	No

As nouns, conditions is a hypernym of sultriness; that is, conditions is a word with a broader meaning than sultriness:

sultriness: oppressively hot and humid weather
conditions: the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation

Other hypernyms of sultriness include atmospheric condition, weather, weather condition.

sultriness (noun)	conditions (noun)
the quality of expressing or arousing sexual desire	the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation
oppressively hot and humid weather	the set of circumstances that affect someone's welfare
	the prevailing context that influences the performance or the outcome of a process