harakiri vs hara-kiri

harakiri and hara-kiri both are nouns.

Word	Noun	Adjective	Verb	Adverb
harakiri	Yes	No	No	No
hara-kiri	Yes	No	No	No

As nouns, harakiri and hara-kiri are synonyms defined as:

harakiri and hara-kiri: ritual suicide by self-disembowelment on a sword; practiced by samurai in the traditional Japanese society

Other synonyms of harakiri include harikari, seppuku.

harakiri (noun)	hara-kiri (noun)
ritual suicide by self-disembowelment on a sword; practiced by samurai in the traditional Japanese society	ritual suicide by self-disembowelment on a sword; practiced by samurai in the traditional Japanese society