decomposition vs disintegration

decomposition and disintegration both are nouns.

Word	Noun	Adjective	Verb	Adverb
decomposition	Yes	No	No	No
disintegration	Yes	No	No	No

As nouns, decomposition and disintegration are synonyms defined as:

decomposition (noun)	disintegration (noun)
the analysis of a vector field	total destruction
the organic phenomenon of rotting	separation into component parts
(biology) the process of decay caused by bacterial or fungal action	the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
(chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance	in a decomposed state
in a decomposed state	a loss (or serious disruption) of organization in some system