score vs par

score and par both are nouns.

Word	Noun	Adjective	Verb	Adverb
score	Yes	No	Yes	No
par	Yes	No	Yes	No

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

score: a number that expresses the accomplishment of a team or an individual in a game or contest
par: (golf) the standard number of strokes set for each hole on a golf course, or for the entire course

As verbs, par is a hyponym of score; that is, par is a word with a more specific, narrower meaning than score:

Other hyponyms of score include shoot, convert, homer, kick, eagle, hole up, ace, walk, equalise, equalize, get even, get, have, make.

score (noun)	par (noun)
the act of scoring in a game or sport	(golf) the standard number of strokes set for each hole on a golf course, or for the entire course
a seduction culminating in sexual intercourse	a state of being essentially equal or equivalent; equally balanced
a number or letter indicating quality (especially of a student's performance)
the facts about an actual situation
a written form of a musical composition; parts for different instruments appear on separate staves on large pages
a resentment strong enough to justify retaliation
a set of twenty members
grounds
a number that expresses the accomplishment of a team or an individual in a game or contest
a slight surface cut (especially a notch that is made to keep a tally)
an amount due (as at a restaurant or bar)

score (verb)	par (verb)
assign a grade or rank to, according to one's evaluation	make a score (on a hole) equal to par
make underscoring marks
gain points in a game
get a certain number or letter indicating quality or performance
make small marks into the surface of
induce to have sex
write a musical score for