elaboration vs working out

elaboration and working out both are nouns.

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

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

elaboration and working out: developing in intricate and painstaking detail

elaboration (noun)	working out (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