Nock vs. Knock

Difference Between Nock and Knock
Nocknoun
Either of the two grooves in a bow that hold the bowstring.
Knocknoun
An abrupt rapping sound, as from an impact of a hard object against wood.
I heard a knock on my door.Nocknoun
The notch at the rear of an arrow that fits on the bowstring.
Knocknoun
A sharp impact.
He took a knock on the head.Nocknoun
(nautical) The upper fore corner of a boom sail or trysail.
Knocknoun
(figuratively) Criticism.
Nockverb
(transitive) To fit an arrow against the bowstring of a bow or crossbow.
Knocknoun
(automotive) Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition; also, the characteristic knocking sound associated with it.
Nockverb
(transitive) To cut a nock in (usually in an arrow's base or the tips of a bow).
Knocknoun
(cricket) A batsman's innings.
He played a slow but sure knock of 35.Nockverb
make small marks into the surface of;
score the clay before firing itKnocknoun
(cycling) hunger knock
Knockverb
To strike for admittance; to rap upon, as a door.
Knockverb
To criticize verbally; to denigrate; to undervalue.
Don’t knock it until you’ve tried it.Knockverb
To kick a ball towards another player; to pass.
Knockverb
To impress forcibly or strongly; to astonish; to move to admiration or applause.
Knockverb
To bump or impact.
I knocked against the table and bruised my leg.I accidentally knocked my drink off the bar.Knockverb
(intransitive) To rap one's knuckles against something, especially wood.
Knock on the door and find out if they’re home.Knocknoun
the sound of knocking (as on a door or in an engine or bearing);
the knocking grew louderKnocknoun
negative criticism
Knocknoun
a vigorous blow;
the sudden knock floored himhe took a bash right in his facehe got a bang on the headKnocknoun
a bad experience;
the school of hard knocksKnocknoun
the act of hitting vigorously;
he gave the table a whackKnockverb
deliver a sharp blow or push :
He knocked the glass clear across the roomKnockverb
rap with the knuckles;
knock on the doorKnockverb
knock against with force or violence;
My car bumped into the treeKnockverb
make light, repeated taps on a surface;
he was tapping his fingers on the table impatientlyKnockverb
sound like a car engine that is firing too early;
the car pinged when I put in low-octane gasolineThe car pinked when the ignition was too far retardedKnockverb
find fault with; express criticism of; point out real or perceived flaws;
The paper criticized the new movieDon't knock the food--it's free