Black, white and grey are:
Complementary colors
Neutrals
Tertiary colors
Primary colors

Neutrals

Explanation:

Technically these colors aren't actually colors

soft,hard and rough for soft would be a pillow or a stuffed animal hard wood floor or a table rough paint

so, not gonna do the actual thing because that's just laziness for an easy assignment like this.

but someone that has a lot of information and interesting details about is picasso. you can easily write a 500 word essay about him and how overtime his paintings of himself got more and more deformed representing that he was forgetting what he looked like and that was from memory.