disintegration vs decomposition

disintegration and decomposition both are nouns.

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

As nouns, disintegration and decomposition are synonyms defined as:

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