suicide vs felo-de-se

suicide and felo-de-se both are nouns.

Word	Noun	Adjective	Verb	Adverb
suicide	Yes	No	No	No
felo-de-se	Yes	No	No	No

As nouns, felo-de-se is a hyponym of suicide; that is, felo-de-se is a word with a more specific, narrower meaning than suicide:

Other hyponyms of suicide include assisted suicide, hara-kiri, harakiri, harikari, seppuku, suttee.

As nouns, suicide and felo-de-se are synonyms defined as:

suicide (noun)	felo-de-se (noun)
the act of killing yourself	an act of deliberate self destruction
a person who kills himself intentionally	a person who kills himself intentionally