Question

What are the higher parts of waves known as?

Answer 1

$\textbf{Hey there!}$

=>Here is ur Answer<=

Higher parts of waves r called $\textbf{Fetch.}$

|HopE__It__Helps| :-|

Answer 2

A common range of terminology is actually used for describing the different features of waves.

When it comes to crest, it is the higher part of the waves.  It is a point on the waves with an utmost value of the upward displacement within the cycle.

In other words, it is the point on the surface wave. It is the place where a displacement of a medium is exactly at a top.