knock vs blow

knock and blow both are nouns.

Word	Noun	Adjective	Verb	Adverb
knock	Yes	No	Yes	No
blow	Yes	No	Yes	No

As nouns, blow is a hypernym of knock; that is, blow is a word with a broader meaning than knock:

As nouns, blow is a hypernym of knock; that is, blow is a word with a broader meaning than knock:

Other hypernyms of knock include bump.

knock (noun)	blow (noun)
the act of hitting vigorously	a powerful stroke with the fist or a weapon
negative criticism	forceful exhalation through the nose or mouth
a vigorous blow	street names for cocaine
the sound of knocking (as on a door or in an engine or bearing)	an impact (as from a collision)
a bad experience	an unpleasant or disappointing surprise
	an unfortunate happening that hinders or impedes; something that is thwarting or frustrating
	a strong current of air

knock (verb)	blow (verb)
find fault with; express criticism of; point out real or perceived flaws	exhale hard
knock against with force or violence	free of obstruction by blowing air through
rap with the knuckles	melt, break, or become otherwise unusable
deliver a sharp blow or push	burst suddenly
make light, repeated taps on a surface	shape by blowing
sound like a car engine that is firing too early	show off
	cause to be revealed and jeopardized
	allow to regain its breath
	deposit eggs (of insects)
	be in motion due to some air or water current
	cause to move by means of an air current
	leave; informal or rude
	cause air to go in, on, or through
	spout moist air from the blowhole
	play or sound a wind instrument
	make a sound as if blown
	sound by having air expelled through a tube
	provide sexual gratification through oral stimulation
	spend lavishly or wastefully on
	spend thoughtlessly; throw away
	make a mess of, destroy or ruin
	be inadequate or objectionable
	be blowing or storming