Grigori Potemkin vs politician

Grigori Potemkin and politician both are nouns.

Word	Noun	Adjective	Verb	Adverb
Grigori Potemkin	Yes	No	No	No
politician	Yes	No	No	No

As nouns, politician is a hypernym of Grigori Potemkin; that is, politician is a word with a broader meaning than Grigori Potemkin:

Grigori Potemkin: a Russian officer and politician who was a favorite of Catherine II and in 1762 helped her to seize power; when she visited the Crimea in 1787 he gave the order for sham villages to be built (1739-1791)
politician: a person active in party politics

Other hypernyms of Grigori Potemkin include military officer, officer, pol, political leader, politico.

Grigori Potemkin (noun)	politician (noun)
a Russian officer and politician who was a favorite of Catherine II and in 1762 helped her to seize power; when she visited the Crimea in 1787 he gave the order for sham villages to be built (1739-1791)	a person active in party politics
	a leader engaged in civil administration
	a schemer who tries to gain advantage in an organization in sly or underhanded ways