Is there a concept of noise in film photography?

In the movie era, this is called graininess. Due to the high ISO film, silver salt particles will be larger to enhance photosensitivity. However, the developed photos will have well-defined impurities, while the silver salt particles of the low-sensitivity film are finer and the photo quality is more delicate.

This kind of high-sensitivity film has a serious graininess and poor image quality, which coincides with the noise of the digital photography era.

In fact, there are similarities in principle, all of which belong to the problem that noise is amplified in the process of signal amplification. Only film is an analog means, and digital photography is a digital means.