mobile vs immobile

mobile is a noun but immobile is not a noun.

Word	Noun	Adjective	Verb	Adverb
mobile	Yes	Yes	No	No
immobile	No	Yes	No	No

mobile (noun)	immobile (noun)
sculpture suspended in midair whose delicately balanced parts can be set in motion by air currents

mobile (adjective)	immobile (adjective)
moving or capable of moving readily (especially from place to place)	not capable of movement or of being moved
having transportation available	securely fixed in place
migratory
affording change (especially in social status)
capable of changing quickly from one state or condition to another