masochist vs flagellant

masochist and flagellant both are nouns.

Word	Noun	Adjective	Verb	Adverb
masochist	Yes	No	No	No
flagellant	Yes	No	No	No

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

masochist: someone who obtains pleasure from receiving punishment
flagellant: a person who is whipped or whips himself for sexual gratification

masochist (noun)	flagellant (noun)
someone who obtains pleasure from receiving punishment	a person who whips himself as a religious penance
	a person who is whipped or whips himself for sexual gratification