automaton vs automatic

automaton and automatic both are nouns.

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

automaton (noun)	automatic (noun)
a mechanism that can move automatically	self-loading rifle capable of automatic fire
a machine that operates on its own without the need for human control	a pistol that will keep firing until the ammunition is gone or the trigger is released
someone who acts or responds in a mechanical or apathetic way

automaton (adjective)	automatic (adjective)
	operating with minimal human intervention; independent of external control
	without volition or conscious control
	resembling the unthinking functioning of a machine