concretion vs densification

concretion and densification both are nouns.

Word	Noun	Adjective	Verb	Adverb
concretion	Yes	No	No	No
densification	Yes	No	No	No

As nouns, concretion and densification are synonyms defined as:

Other synonyms of concretion include compaction, compression.

concretion (noun)	densification (noun)
the union of diverse things into one body or form or group; the growing together of parts	an increase in the density of something
an increase in the density of something
a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body
the formation of stonelike objects within a body organ (e.g., the kidneys)