fight vs pugilism

fight and pugilism both are nouns.

Word	Noun	Adjective	Verb	Adverb
fight	Yes	No	Yes	No
pugilism	Yes	No	No	No

As nouns, pugilism is a hypernym of fight; that is, pugilism is a word with a broader meaning than fight:

Other hypernyms of fight include boxing, fisticuffs.

fight (noun)	pugilism (noun)
a hostile meeting of opposing military forces in the course of a war	fighting with the fists
the act of fighting; any contest or struggle
a boxing or wrestling match
an aggressive willingness to compete
an intense verbal dispute

fight (verb)	pugilism (verb)
be engaged in a fight; carry on a fight
fight against or resist strongly
make a strenuous or labored effort
exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for