unsteady vs spastic

unsteady is not a noun while spastic is a noun.

Word	Noun	Adjective	Verb	Adverb
unsteady	No	Yes	No	No
spastic	Yes	Yes	No	No

unsteady (noun)	spastic (noun)
	a person suffering from spastic paralysis

unsteady (adjective)	spastic (adjective)
subject to change or variation	relating to or characterized by spasm
not firmly or solidly positioned	suffering from spastic paralysis
	affected by involuntary jerky muscular contractions; resembling a spasm