Frequent use of metaphors is a key characteristic of the LEARNING PATTERN.
We learn new things be associating them with items that we are familiar with. Thus, the frequent use of metaphors.
Metaphors is a figure of speech that compares one thing to another thing that is completely unrelated with one another.
For example:
Life is a journey.
Life and journey are two things that are unrelated but it is used metaphorically because life can be like a journey because it is process we have to take, Like like journey may seem endless but both have a designated destination.
Complementary colours are colours that are combined to make a grayscale off colours
A complementary pair is when you combine colours that are opposite of each other like red and green, or yellow and purple etc.
When you put two of these colours together they cancel each other out which leads to that grayscale of colours like grey or even brown