illustration
/ˌɪləˈstreɪʃən/
noun
plural -tions
[count] :a picture or drawing in a book, magazine, etc.
[count] :an example or story that is used to make something easier to understand
[noncount] :the act or process of illustrating something: such as
the act or process of producing or providing pictures for a book, magazine, etc.
the act or process of giving examples to make something easier to understand