dagger vs bodkin

dagger and bodkin both are nouns.

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

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

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

dagger (noun)	bodkin (noun)
a short knife with a pointed blade used for piercing or stabbing	a blunt needle for threading ribbon through loops
a character used in printing to indicate a second cross reference or footnote when the asterisk has already been used	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