mischance vs accident

mischance and accident both are nouns.

Word	Noun	Adjective	Verb	Adverb
mischance	Yes	No	No	No
accident	Yes	No	No	No

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

Other hyponyms of mischance include near miss, derailment, ground loop, puncture, slip, trip, crash.

mischance (noun)	accident (noun)
an instance of misfortune	anything that happens suddenly or by chance without an apparent cause
an unpredictable outcome that is unfortunate	an unfortunate mishap; especially one causing damage or injury