dagger vs knife

dagger and knife both are nouns.

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

As nouns, knife is a hypernym of dagger; that is, knife is a word with a broader meaning than dagger:

dagger (noun)	knife (noun)
a short knife with a pointed blade used for piercing or stabbing	edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle
a character used in printing to indicate a second cross reference or footnote when the asterisk has already been used	a weapon with a handle and blade with a sharp point
	any long thin projection that is transient

dagger (verb)	knife (verb)
	use a knife on