What is the definition of contrast

As a principle of art, contrast refers to the arrangement of opposite elements and effects. For example, light and dark colors, smooth and rough textures, large and small shapes.

Explanation:

the state of being strikingly different from something else in juxtaposition or close association.

Example:

"the day began cold and blustery, in contrast to almost two weeks of uninterrupted sunshine"

In simpler terms, it means finding the differences of two objects.

Explanation:

Note that juxtaposition means the fact of two things being seen or placed close together with contrasting effect.

Hope this helps! :D

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."