What is a homonym?

Answer 1

One of two or more words alike in pronunciation but different in meaning, derivation, or spelling (ie, to, two, too)

Is this not the definition of homophones?

While homonyms are words that share same form but have unrelated meanings e.g. like: 'I like looking / look like new'.
-noun1.homophone ( def. 1 ) .

2.a word the same as another in sound and spelling but different in meaning, as chase "to pursue" and chase "to ornament metal."

3.(loosely) homograph.

4.a namesake.

5.Biology . a name given to a species or genus that has been assigned to a different species or genus and that is therefore rejected.

Answer 2

A homonym is a word that has the same spelling and/or pronunciation as another word, but has a different meaning. Examples include "bat" (a flying mammal) and "bat" (a club used in sports).