blade vs knife

blade and knife both are nouns.

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

blade (noun)	knife (noun)
the flat part of a tool or weapon that (usually) has a cutting edge	edge tool used as a cutting instrument; has a pointed blade with a sharp edge and a handle
a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard	a weapon with a handle and blade with a sharp point
flat surface that rotates and pushes against air or water	any long thin projection that is transient
the part of the skate that slides on the ice
a broad flat body part (as of the shoulder or tongue)
a cut of beef from the shoulder blade
something long and thin resembling a blade of grass
a dashing young man
especially a leaf of grass or the broad portion of a leaf as distinct from the petiole

blade (verb)	knife (verb)
	use a knife on