electrolysis vs decomposition

electrolysis and decomposition both are nouns.

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

As nouns, decomposition is a hypernym of electrolysis; that is, decomposition is a word with a broader meaning than electrolysis:

electrolysis: (chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions
decomposition: (chemistry) separation of a substance into two or more substances that may differ from each other and from the original substance

Other hypernyms of electrolysis include breakdown, chemical decomposition reaction, decomposition reaction.

electrolysis (noun)	decomposition (noun)
removing superfluous or unwanted hair by passing an electric current through the hair root	the analysis of a vector field
(chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions	the organic phenomenon of rotting
	(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
	in a decomposed state