advertizing vs advertizement

advertizing and advertizement both are nouns.

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

As nouns, advertizing and advertizement are synonyms defined as:

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

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

advertizing (noun)	advertizement (noun)
a public promotion of some product or service	a public promotion of some product or service