different between impregnation vs cementation

English

From Middle English impregnacioun, from Old French impregnacion, in turn from Late Latin impregnatio.

impregnation (countable and uncountable, plural impregnations)

The act of making pregnant; fertilization.
The fact or process of imbuing or saturating with something; diffusion of some element, idea etc. through a medium or substance.
That with which anything is impregnated.
(geology) An ore deposit, with indefinite boundaries, consisting of rock impregnated with ore.

From Old French impregnacion, from Latin impregnatio.

impregnation f (plural impregnations)

cement +? -ation

cementation (countable and uncountable, plural cementations)

The act of cementing
(metallurgy) The impregnation of the surface of a metal with another material; the manufacture of steel by carburizing iron
(geology) The precipitation of mineral matter in the pores of a sediment
(medicine) The use of a cement join the parts of a broken bone to aid in the healing process
(dentistry) The use of a cement or adhesive to fasten orthodontics or to restore chipped or broken teeth

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