'Policial' as a noun in Spanish

Hello, Rua: 'Policial' is an adjective. See the official Spanish dictionary (www.rae.es). In any case, the use of 'policial' as a noun has not been accepted. Notice that sometimes the subject is implicit. For example, in "... una policial ..." the phrase is "... una (novela, historieta, etc.) policial ...".

Greetings.

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