different between classified vs cataloged

English

classify +? -ed

classified

simple past tense and past participle of classify
Make sure all the field observations are classified by species.

classified (comparative more classified, superlative most classified)

Sorted into classes or categories
Formally assigned by a government to one of several levels of sensitivity, usually (in English) top secret, secret, confidential, and, in some countries, restricted; thereby making disclosure to unauthorized persons illegal.
We do not discuss specific interrogation techniques because they are classified information.
Not meant to be disclosed by a person or organization.
I won't say who I'm going to the prom with; that's classified.

From classified advertisement, by shortening.

classified (plural classifieds)

(informal) A classified advertisement in a newspaper or magazine.
He ran a classified for the tools he wanted to sell.

cataloged (not comparable)

cataloged

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