* Hyper: Above, beyond, excessive, or increased.
* Hypo: Below, deficient, or decreased.
Here are some examples:
Hyper:
* Hypertension: High blood pressure
* Hyperglycemia: High blood sugar
* Hyperactive: Excessively active
* Hypersensitive: Extremely sensitive
Hypo:
* Hypotension: Low blood pressure
* Hypoglycemia: Low blood sugar
* Hypothyroid: Underactive thyroid gland
* Hypodermic: Under the skin
Essentially, "hyper" indicates something is above the normal level or value, while "hypo" indicates something is below the normal level or value.