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