Common words:
* Anonymous: Without a known name; nameless.
* Synonym: A word that has the same meaning as another word.
* Antonym: A word that has the opposite meaning of another word.
* Homonym: A word that sounds the same as another word but has a different meaning.
* Pseudonym: A fictitious name used by an author.
* Acronym: A word formed from the initial letters of a phrase.
Less common words:
* Eponym: A person or thing after whom something is named.
* Heteronym: A word that is spelled the same as another word but has a different pronunciation and meaning.
* Onymancy: Divination by means of names.
* Patronym: A name derived from the name of a father or ancestor.
* Toponym: A place name.
These are just a few examples. Many other words contain the root "onym" and relate to names, words, or their meanings.