Newspaper always a Periodical?

[TobiasNx]

Is newspaper a subset of Periodical therefore all Newspaper also have type Periodical?

I was stumbling over old and new records in ALMA/ALEPH, e.g.:
http://lobid.org/resources/990117329470206441.json

[TobiasNx]

From closed: #1993

http://lobid.org/resources/990054089950206441
http://aleph.lobid.org/resources/HT001387709

In Aleph Spiegel used to be a type:Periodical and a type:Newspaper. Now it is only a Newspaper.
They seem not to be mutual exclusive but are Newspaper a subset of Periodicals and therefore all Newspapers are Periodicals too?