Movies and TV shows have at least three attributes in common - title, release year, and country - and it is plausible to say that both movies and TV shows are kinds of visual media. So, modeling this as specialization (with a superclass VISUAL MEDIA with attributes title, release year, and country) is reasonable. Since you don't have VISUAL MEDIA entities running around (only movies and TV shows), the specialization would be total (and disjoint - something can't be both a movie and a TV show).

Movies, TV shows, and actors have a relationship in common - the ability to be associated with awards, either through winning or nomination. However, movies/TV shows and actors are fundamentally different things so specialization is not appropriate. Instead, a category type "AWARD NOMINEE" would be appropriate. (A winner must first be nominated, so the nomination relationship can be modeled with an attribute indicating win or not.)