mobile vs ambulant

mobile is a noun but ambulant is not a noun.

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

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

mobile (adjective)	ambulant (adjective)
moving or capable of moving readily (especially from place to place)	able to walk about
having transportation available
migratory
affording change (especially in social status)
capable of changing quickly from one state or condition to another