blackmailer vs extortionist

blackmailer and extortionist both are nouns.

Word	Noun	Adjective	Verb	Adverb
blackmailer	Yes	No	No	No
extortionist	Yes	No	No	No

As nouns, blackmailer and extortionist are synonyms defined as:

blackmailer and extortionist: a criminal who extorts money from someone by threatening to expose embarrassing information about them

Other synonyms of blackmailer include extortioner.

blackmailer (noun)	extortionist (noun)
a criminal who extorts money from someone by threatening to expose embarrassing information about them	a criminal who extorts money from someone by threatening to expose embarrassing information about them