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.
1. Cloudy, misty, or hazy. 2. Lacking definite form or limits; vague: nebulous assurances of future cooperation. 3. Of, relating to, or characteristic of a nebula. [Middle English, from Latin nebulÅsus, from nebula, cloud; see nebh- in the Appendix of Indo-European roots.]