的 with nouns which classify other nouns Should the particle 的 be omitted among nouns that refer to other nouns, such as phrases like "the plot of the film", "the head of a giraffe", etc.?
The particle 的 ties two nouns closely. For instance, 電影的情節 (the plot of the film) emphasizes the plot of a film but that 電影情節 is about the plot and the film which is loosely connected and the meaning of each noun is stressed.