advertising vs advertizing

advertising and advertizing both are nouns.

Word	Noun	Adjective	Verb	Adverb
advertising	Yes	No	No	No
advertizing	Yes	No	No	No

As nouns, advertising and advertizing are synonyms defined as:

advertising and advertizing: a public promotion of some product or service

Other synonyms of advertising include ad, advert, advertisement, advertizement.

advertising (noun)	advertizing (noun)
the business of drawing public attention to goods and services	a public promotion of some product or service
a public promotion of some product or service