As verbs the difference between publicize and advertize
is that publicize is (american spelling) while advertize is .
publicize
English
Alternative forms
* publicise (Commonwealth )
Verb
(en-verb)
(American spelling)
advertize
English
Verb
(advertiz)
Usage notes
The z spelling is an archaic form in British English. It appears occasionally in modern American English but is sometimes deprecated because its etymology is not from Greek.