advertorial vs advertizing

advertorial and advertizing both are nouns.

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

As nouns, advertizing is a hypernym of advertorial; that is, advertizing is a word with a broader meaning than advertorial:

advertorial: an advertisement that is written and presented in the style of an editorial or journalistic report
advertizing: a public promotion of some product or service

Other hypernyms of advertorial include ad, advert, advertisement, advertising, advertizement.

advertorial (noun)	advertizing (noun)
an advertisement that is written and presented in the style of an editorial or journalistic report	a public promotion of some product or service