suffusion vs pervasion

suffusion and pervasion both are nouns.

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

As nouns, suffusion and pervasion are synonyms defined as:

suffusion and pervasion: the process of permeating or infusing something with a substance

Other synonyms of suffusion include permeation.

suffusion (noun)	pervasion (noun)
the process of permeating or infusing something with a substance	the process of permeating or infusing something with a substance