impregnation vs plastination

impregnation and plastination both are nouns.

Word	Noun	Adjective	Verb	Adverb
impregnation	Yes	No	No	No
plastination	Yes	No	No	No

impregnation (noun)	plastination (noun)
creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant	a process involving fixation and dehydration and forced impregnation and hardening of biological tissues; water and lipids are replaced by curable polymers (silicone or epoxy or polyester) that are subsequently hardened
the process of totally saturating something with a substance
material with which something is impregnated