Biff vs Bonk - What's the difference?

As nouns the difference between biff and bonk

is that biff is a sudden, sharp blow or punch while bonk is a bump on the head.

is that biff is to strike such a blow while bonk is to strike or collide with something.

(en noun)

A sudden, sharp blow or punch.

(sports): A wipeout.

(en verb)

To strike such a blow.

(NZ, slang) To discard; to throw out; to throw away.

(sports) To wipe out; to faceplant; to fall.

(en verb) (slim-wikipedia)

To strike or collide with something.

To have sexual intercourse.

(skateboarding) To hit something with the front wheels of the skateboard, whilst in the air, this pre-dates the snowboarding term,

(snowboarding) To hit something (especially a tree) with one's snowboard, especially while in the air.

To experience sudden and severe fatigue in an endurance sports event due to glycogen depletion.

* (to have sexual intercourse) boink * (experience fatigue)

(en noun)

A bump on the head.

Any minor collision or random meeting.

An act of sexual intercourse.

A condition of sudden, severe fatigue in an endurance sports event caused by glycogen depletion.

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