accident vs shipwreck

accident and shipwreck both are nouns.

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

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

Other hyponyms of accident include collision, crash, wreck, accidental injury, injury, wreck, casualty, fatal accident.

accident (noun)	shipwreck (noun)
anything that happens suddenly or by chance without an apparent cause	a wrecked ship (or a part of one)
an unfortunate mishap; especially one causing damage or injury	an accident that destroys a ship at sea
	an irretrievable loss

accident (verb)	shipwreck (verb)
	destroy a ship
	cause to experience shipwreck
	ruin utterly
	suffer failure, as in some enterprise