semiautomatic vs automatic

semiautomatic and automatic both are nouns.

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

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

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