random vs randomness

random is not a noun while randomness is a noun.

Word	Noun	Adjective	Verb	Adverb
random	No	Yes	No	No
randomness	Yes	No	No	No

random (noun)	randomness (noun)
	the quality of lacking any predictable order or plan
	(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work

random (adjective)	randomness (adjective)
lacking any definite plan or order or purpose; governed by or depending on chance