impregnation vs pervasion

impregnation and pervasion both are nouns.

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

As nouns, pervasion is a hypernym of impregnation; that is, pervasion is a word with a broader meaning than impregnation:

Other hypernyms of impregnation include permeation, suffusion.

impregnation (noun)	pervasion (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 permeating or infusing something with a substance
the process of totally saturating something with a substance
material with which something is impregnated