Pop music may be distinguished from classical or art music and from folk music, but since the term spans many rock, hip hop, rhythm and blues (R&B), country, dance and operatic pop acts, it is reasonable to say that pop music is a loosely defined category.
Exclusive partner, more commonly known as an EP (pronounced E-P), is the stage in a relationship in which you have full exclusivity with another person, with the intention of pursuing a relationship in the near future. However, this other person is not your boyfriend/girlfriend yet.
Ephemera (singular: ephemeron) are any transitory written or printed matter not meant to be retained or preserved. The word derives from the Greek ephemeros, meaning lasting only one day, short-lived. Some collectible ephemera are advertising trade cards, airsickness bags, bookmarks, catalogues, greeting cards, letters, pamphlets, postcards, posters, prospectuses, defunct stock certificates or tickets, and zines. 1 Etymology.