impregnation vs impregnate

impregnation is a noun but impregnate is not a noun.

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

impregnation (noun)	impregnate (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
the process of totally saturating something with a substance
material with which something is impregnated

impregnation (verb)	impregnate (verb)
	make pregnant
	fertilize and cause to grow
	infuse or fill completely
	fill, as with a certain quality