Noun:
1: classified advertisement, classified ad, classified a short ad in a newspaper or magazine (usually in small print) and appearing along with other ads of the same type
Adjective:
1: classified, grouped, categorised, sorted, categorized arranged into classes
2: eyes-only, top-secret, classified, secret, confidential, sensitive, restricted official classification of information or documents; withheld from general circulation; "thousands of classified documents have now been declassified"