dagger vs poniard

dagger and poniard both are nouns.

Word	Noun	Adjective	Verb	Adverb
dagger	Yes	No	No	No
poniard	Yes	No	Yes	No

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

Other hyponyms of dagger include dirk, kirpan, crease, creese, kris, bodkin, stiletto.

dagger (noun)	poniard (noun)
a short knife with a pointed blade used for piercing or stabbing	a dagger with a slender blade
a character used in printing to indicate a second cross reference or footnote when the asterisk has already been used

dagger (verb)	poniard (verb)
	stab with a poniard