Are there any true nouns containing a hyphen in the Spanish language?

Question

In this Spanish Wikipedia: about Guion ortográfico I found mentioned

Separar algunas palabras compuestas.

but there are no examples given.

Are these foreign words or are there proper examples in Spanish?

Answer 1

Yes, there are proper examples in Spanish. They are usually two adjectives that describe a very specific quality of the object (in most cases).

For example:

Franco-alemán

Lógico-matemático

Físico-químico

Histórico-artístico

Cirujano-anestesista

anti-Mussolini

These words are not foreign, as said they describe something specific.

There are some rules as to the usage of the hyphen:

• The compound words with Spanish lexemes are usually written with a hyphen when they maintain their tonic syllable or maintain certain independence: teórico-práctico
• It is also used when there are deleted prepositions between words in apposition and when the second word is a noun with a upper case letter: anti-Otan
• Words with a prefix that are constructed in apposition are written without the hyphen: coche bomba
• To separate a prefix from its base: re-presentación
• To represent various words with a desire of a Unitarian presentation, usually used in philosophical texts: Sartre ser-para-sí, ser-para-otro
• Code numbers, prefixes or letters: DC-10, Barcelona-92

Source for a more complete explanation, (or search for guión in the DPD)

Answer 2

This is the RAE article in the Diccionario panhispánico de dudas.

There are plenty of examples and all the rules to use the hyphen. Hope it helps.