motionless vs inactive

motionless and inactive both are adjectives.

Word	Noun	Adjective	Verb	Adverb
motionless	No	Yes	No	No
inactive	No	Yes	No	No

As adjectives, motionless and inactive are synonyms defined as:

Other synonyms of motionless include static, still.

motionless (adjective)	inactive (adjective)
not in physical motion	(military) not involved in military operations
	not active physically or mentally
	(pathology) not progressing or increasing; or progressing slowly
	lacking activity; lying idle or unused
	lacking in energy or will
	(of e.g. volcanoes) not erupting and not extinct
	not exerting influence or change
	not engaged in full-time work
	not in physical motion
	(chemistry) not participating in a chemical reaction; chemically inert