breakdown vs decomposition

breakdown and decomposition both are nouns.

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

As nouns, breakdown and decomposition are synonyms defined as:

breakdown and decomposition: (biology) the process of decay caused by bacterial or fungal action

Other synonyms of breakdown include putrefaction, rot, rotting.

As nouns, breakdown and decomposition are synonyms defined as:

breakdown and decomposition: (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance

Other synonyms of breakdown include chemical decomposition reaction, decomposition reaction.

breakdown (noun)	decomposition (noun)
the act of disrupting an established order so it fails to continue	the analysis of a vector field
an analysis into mutually exclusive categories	the organic phenomenon of rotting
a cessation of normal operation	(biology) the process of decay caused by bacterial or fungal action
(biology) the process of decay caused by bacterial or fungal action	(chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance
(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
a mental or physical breakdown