expound vs elaborate

expound is not an adjective while elaborate is an adjective.

Word	Noun	Adjective	Verb	Adverb
expound	No	No	Yes	No
elaborate	No	Yes	Yes	No

As verbs, expound and elaborate are synonyms defined as:

expound and elaborate: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing

Other synonyms of expound include dilate, enlarge, expand, expatiate, exposit, flesh out, lucubrate.

As verbs, elaborate is a hypernym of expound; that is, elaborate is a word with a broader meaning than expound:

expound: state
elaborate: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing

Other hypernyms of expound include dilate, enlarge, expand, expatiate, exposit, expound, flesh out, lucubrate.

expound (adjective)	elaborate (adjective)
	developed or executed with care and in minute detail
	marked by complexity and richness of detail

expound (verb)	elaborate (verb)
add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing	make more complex, intricate, or richer
state	work out in detail
	add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
	produce from basic elements or sources; change into a more developed product