5. Fixers
After the two processes above, continue with the use of a chemical fixer which functions so that the image on the printed film does not change because the sensitivity to light has been lost.
6. Grains
Usually when shooting with analog there are small spots in the photo called grain. Grain is different from noise, KEE friends, even though they look similar. Grain usually comes from the reaction of light with chemical particles. Usually the size and level of roughness of the spots are not always the same depending on the type and sensitivity of the film you use.
Source : https://www.howtogeek.com/
7. Darkroom
Usually also called a dark room. This room is used to print film into photo sheets. There is a special light used (safelight) which is red.
Source : http://annaliasiphotography.weebly.com/
8. Lab
Today's lab is the term for a studio where photos are washed. Usually this place also sells rolls of film and developer fluid.