working out vs elaboration

working out and elaboration both are nouns.

Word	Noun	Adjective	Verb	Adverb
working out	Yes	No	No	No
elaboration	Yes	No	No	No

As nouns, working out and elaboration are synonyms defined as:

working out and elaboration: developing in intricate and painstaking detail

working out (noun)	elaboration (noun)
developing in intricate and painstaking detail	developing in intricate and painstaking detail
	addition of extra material or illustration or clarifying detail
	marked by elaborately complex detail
	a discussion that provides additional information
	the result of improving something