Es "número de teléfono" pero "tarjeta telefónica". ¿Cómo puedo decidir qué forma es (más) correcta?
It's "Número de teléfono", but "Tarjeta telefónica". How can I tell which word is more appropriate. What actually is the difference between these words?
When searching the Internet, I only find much more examples, but no explanation when to use which one.