flesh out vs elucidate

flesh out and elucidate both are verbs.

Word	Noun	Adjective	Verb	Adverb
flesh out	No	No	Yes	No
elucidate	No	No	Yes	No

As verbs, elucidate is a hypernym of flesh out; that is, elucidate is a word with a broader meaning than flesh out:

flesh out: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
elucidate: make clear and (more) comprehensible

Other hypernyms of flesh out include clarify, clear up.

flesh out (verb)	elucidate (verb)
become round, plump, or shapely	make free from confusion or ambiguity; make clear
add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing	make clear and (more) comprehensible
make fat or plump