pogrom vs persecution

pogrom and persecution both are nouns.

Word	Noun	Adjective	Verb	Adverb
pogrom	Yes	No	No	No
persecution	Yes	No	No	No

As nouns, persecution is a hypernym of pogrom; that is, persecution is a word with a broader meaning than pogrom:

pogrom: organized persecution of an ethnic group (especially Jews)
persecution: the act of persecuting (especially on the basis of race or religion)

pogrom (noun)	persecution (noun)
organized persecution of an ethnic group (especially Jews)	the act of persecuting (especially on the basis of race or religion)