Hypovolemic vs Hypoxia - What's the difference?

As an adjective hypovolemic

is of, pertaining to, or characterized by low volume of blood in the circulatory system; as hypovolemic shock.

(pathology) a condition in which tissues (especially the blood) are deprived of an adequate supply of oxygen; anoxia.

* hypovolaemic

(-)

Of, pertaining to, or characterized by low volume of blood in the circulatory system; as hypovolemic shock.

(wikipedia hypoxia)

(pathology) A condition in which tissues (especially the blood) are deprived of an adequate supply of oxygen; anoxia

A reduced concentration of dissolved oxygen in an aquatic environment.

* hypoxic