Synonyms for Congeal:

n.

bake, boil over, freeze, clear, boil, cloud, break down, bubble, refrigerate, boil away, boil up, atomize. concrete, solid, indurate, petrify, cake, dry. curdle, gelatinize, jelly, clot. congeal (noun)
clot, freeze, harden, thicken, solidify, set, cake, coagulate, curdle.

v.

change (verb)
set, jell.
coagulate (verb)
concrete, jelly, refrigerate, set, harden, solidify, gelatinize, dry, cake, clot, curdle, thicken, jell, indurate, freeze.
congeal (verb)
harden, thicken, set, solidify, coagulate, jell.

Other synonyms:

freeze, indurate, gelatinize. cake, curdle, clot. petrify, jelly. clot
coagulate.
harden
indurate, set, solidify, harden.
Other relevant words:
clot, indurate, freeze, jelly, cake, gelatinize, solid, petrify, coagulate, refrigerate, curdle, dry, concrete.