advertiser vs tout

advertiser and tout both are nouns.

Word	Noun	Adjective	Verb	Adverb
advertiser	Yes	No	No	No
tout	Yes	No	Yes	No

As nouns, tout is a hyponym of advertiser; that is, tout is a word with a more specific, narrower meaning than advertiser:

Other hyponyms of advertiser include huckster, booster, plugger, promoter, touter.

advertiser (noun)	tout (noun)
someone whose business is advertising	someone who advertises for customers in an especially brazen way
	one who sells advice about gambling or speculation (especially at the racetrack)
	someone who buys tickets to an event in order to resell them at a profit

advertiser (verb)	tout (verb)
	show off
	advertize in strongly positive terms