congelation vs congealment

congelation and congealment both are nouns.

Word	Noun	Adjective	Verb	Adverb
congelation	Yes	No	No	No
congealment	Yes	No	No	No

As nouns, congelation and congealment are synonyms defined as:

congelation and congealment: the process of congealing; solidification by (or as if by) freezing

congelation (noun)	congealment (noun)
the process of congealing; solidification by (or as if by) freezing	the process of congealing; solidification by (or as if by) freezing