hotness vs hot

hotness is a noun but hot is not a noun.

Word	Noun	Adjective	Verb	Adverb
hotness	Yes	No	No	No
hot	No	Yes	No	No

hotness (adjective)	hot (adjective)
	used of physical heat; having a high or higher than desirable temperature or giving off heat or feeling or causing a sensation of heat or burning
	(extended meanings, especially of psychological heat) marked by intensity or vehemence especially of passion or enthusiasm
	marked by excited activity
	charged or energized with electricity
	having or showing great eagerness or enthusiasm
	very fast; capable of quick response and great speed
	made recently
	very good; often used in the negative
	recently stolen or smuggled
	having or bringing unusually good luck
	of a seeker; very near to the object sought
	newest or most recent
	very popular or successful
	having or dealing with dangerously high levels of radioactivity
	sexually excited or exciting
	performed or performing with unusually great skill and daring and energy
	producing a burning sensation on the taste nerves
	very unpleasant or even dangerous
	characterized by violent and forceful activity or movement; very intense
	wanted by the police
	(color) bold and intense