dispersion vs dispersal

dispersion and dispersal both are nouns.

Word	Noun	Adjective	Verb	Adverb
dispersion	Yes	No	No	No
dispersal	Yes	No	No	No

As nouns, dispersion and dispersal are synonyms defined as:

Other synonyms of dispersion include diffusion, dissemination.

dispersion (noun)	dispersal (noun)
the act of dispersing or diffusing something	the act of dispersing or diffusing something
the spatial or geographic property of being scattered about over a range, area, or volume
spreading widely or driving off