automatic vs automaton

automatic and automaton both are nouns.

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

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

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