Congeal vs Refrigerate - What's the difference?

In transitive terms the difference between congeal and refrigerate

is that congeal is to make rigid or immobile while refrigerate is now specifically, to keep cool by containing within a refrigerator.

(en verb)

To change from a liquid to solid state perhaps by cold

To coagulate, make curdled or semi-solid as gel or jelly

To make rigid or immobile

To become congealed, solidify

(refrigerat)

To cool down, make cool.

* , Bk.I, New York 2001, p.149:

the other [artery] goes to the lungs, to fetch air to refrigerate the heart.

Now specifically, to keep cool by containing within a refrigerator.

Please refrigerate your uncooked meats at or below 40° Fahrenheit.