Highs and Lows

High and low can be used for a variety of situations, including: elevation, temperature, salary, evaluation,  emotion / mental state, etc. The following examples include some of the most common uses.

Elevation
Lake Titicaca is the highest lake in the world.
The suicide jumped from a very high building.
The dead sea is the lowest point on Earth.
My apartment is too low, so the traffic is very loud.

Temperature
The lake freezes over in low temperatures and people can ice skate on it.
Despite my neighbors' complaints, I open the windows at home and take off all of my clothes in high temperatures.

Salary
I have a much lower salary than my friends and it has given me a low self-esteem.
The company offered me a better position with a higher salary, but the offer was withdrawn because I have high blood pressure.

Evaluation
I got a high grade in anatomy because I'm interested in the human body.
I got a low grade in theology, so I stopped believing in God.


Emotional / Mental State
I feel very high spirited because of the beautiful weather. (to be positive)
I feel very high because I took a massive amount of LSD. (to test positive for...)
This is a low point in my life and I want to die.
I have never felt so low and I have no reason to continue living.