inactive vs motionless

inactive and motionless both are adjectives.

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

As adjectives, inactive and motionless are synonyms defined as:

Other synonyms of inactive include static, still.

inactive (adjective)	motionless (adjective)
(military) not involved in military operations	not in physical motion
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