classified vs restricted

classified is a noun but restricted is not a noun.

Word	Noun	Adjective	Verb	Adverb
classified	Yes	Yes	No	No
restricted	No	Yes	No	No

classified (noun)	restricted (noun)
a short ad in a newspaper or magazine (usually in small print) and appearing along with other ads of the same type

classified (adjective)	restricted (adjective)
arranged into classes	subject to restriction or subjected to restriction
official classification of information or documents; withheld from general circulation	the lowest level of official classification for documents
	restricted in meaning; (as e.g. `man' in `a tall man')