cornucopia vs symbol

cornucopia and symbol both are nouns.

Word	Noun	Adjective	Verb	Adverb
cornucopia	Yes	No	No	No
symbol	Yes	No	No	No

As nouns, symbol is a hypernym of cornucopia; that is, symbol is a word with a broader meaning than cornucopia:

cornucopia: a goat's horn filled with grain and flowers and fruit symbolizing prosperity
symbol: something visible that by association or convention represents something else that is invisible

Other hypernyms of cornucopia include symbolic representation, symbolisation, symbolization.

cornucopia (noun)	symbol (noun)
the property of being extremely abundant	something visible that by association or convention represents something else that is invisible
a goat's horn filled with grain and flowers and fruit symbolizing prosperity	an arbitrary sign (written or printed) that has acquired a conventional significance