stable vs unfluctuating

stable is a noun but unfluctuating is not a noun.

Word	Noun	Adjective	Verb	Adverb
stable	Yes	Yes	Yes	No
unfluctuating	No	Yes	No	No

stable (noun)	unfluctuating (noun)
a farm building for housing horses or other livestock

stable (adjective)	unfluctuating (adjective)
resistant to change of position or condition	not liable to fluctuate or especially to fall
maintaining equilibrium
firm and dependable; subject to little fluctuation
showing little if any change
not taking part readily in chemical change

stable (verb)	unfluctuating (verb)
shelter in a stable