permeation vs suffusion

permeation and suffusion both are nouns.

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

As nouns, permeation and suffusion are synonyms defined as:

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

Other synonyms of permeation include pervasion.

permeation (noun)	suffusion (noun)
mutual penetration; diffusion of each through the other	the process of permeating or infusing something with a substance
the process of permeating or infusing something with a substance