parry vs biff

parry and biff both are nouns.

Word	Noun	Adjective	Verb	Adverb
parry	Yes	No	Yes	No
biff	Yes	No	Yes	No

As nouns, biff is a hypernym of parry; that is, biff is a word with a broader meaning than parry:

Other hypernyms of parry include clout, lick, poke, punch, slug.

parry (noun)	biff (noun)
a return punch (especially by a boxer)	(boxing) a blow with the fist
(fencing) blocking a lunge or deflecting it with a circular motion of the sword

parry (verb)	biff (verb)
avoid or try to avoid fulfilling, answering, or performing (duties, questions, or issues)	strike, usually with the fist
impede the movement of (an opponent or a ball)