autoloading vs automatic

autoloading is not a noun while automatic is a noun.

Word	Noun	Adjective	Verb	Adverb
autoloading	No	Yes	No	No
automatic	Yes	Yes	No	No

autoloading (noun)	automatic (noun)
	self-loading rifle capable of automatic fire
	a pistol that will keep firing until the ammunition is gone or the trigger is released

autoloading (adjective)	automatic (adjective)
(of firearms) capable of automatic loading and firing continuously	operating with minimal human intervention; independent of external control
	without volition or conscious control
	resembling the unthinking functioning of a machine