bodkin vs poniard

bodkin and poniard both are nouns.

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

As nouns, bodkin and poniard are synonyms defined as:

bodkin (noun)	poniard (noun)
a blunt needle for threading ribbon through loops	a dagger with a slender blade
a small sharp-pointed tool for punching holes in leather or fabric
formerly a long hairpin; usually with an ornamental head
a dagger with a slender blade

bodkin (verb)	poniard (verb)
	stab with a poniard