classical music. In technical musical usage this means music composed during the late eighteenth and early nineteenth centuries, characterized by the development of the sonata by such composers as Mozart. In popular use, however, the term is used to mean any serious art music as distinct from jazz, pop, or folk.
The definition of vague is something unclear, hazy or uncertain. An example of vague would be directions to a house that don't include street names. YourDictionary definition and usage example.
Look to the adjective ambiguous when you need to describe something that's open to more than one interpretation, like the headline Squad helps dog bite victim.. Something ambiguous is unclear or vague, like the end of a short story that leaves you scratching your head. But if you're ambivalent about something, you can take it or leave it.