Preposition: of

• brain: Mr Downing, surgeon, said he died from concussion of the brain.

• gun: I felt the concussions of great guns tear past me through the murk.

Converse of object

• suffer: To add to Britain's troubles Billy Hall suffered concussion going down on a loose ball.

• sustain: Mr Row was thrown on the way home, sustaining concussion of the brain.

• cause: Downstairs, the new light fitting falls on Thelma's head, causing concussion.

• get: If the public get hit on the head by the ball they could get concussion or even get killed.

• have: Someone is even moved to remark: " Lucky old Penny having concussion - at least she's down in the sun!

• avoid: Affected horses will usually move with their heels landing first to try to avoid concussion to the painful toe region.

Adjective modifier

• mild: I've been racing for 19 years and I've had mild concussion from previous shunts and going off the track.

• slight: I was carried home with cuts, bruises and a slight concussion.

• severe: That year I also enjoyed my first severe concussion!

• minor: Apart from minor concussion she seemed quite good considering.

• serious: A very serious concussion with several days of unconsciousness is also dangerous owing to the risk of the brain swelling.

• bad: The nurses told us that she had bad concussion.

Modifies a noun

• grenade: Two fully charged pulse cells and five concussion grenades were snugly held in his chest webbing.

• injury: The weapons also needed to be light enough so that they would not break bones or cause concussion injuries to the players.

• courtesy: The mega-popular Gaffer was unfortunately unable to ride after suffering a bout of concussion courtesy of a fall whilst racing in Poland on Saturday.

• syndrome: Keywords; Short stay ward, head injury, post concussion syndrome.

Noun used with modifier

• post: Keywords; Short stay ward, head injury, post concussion syndrome.

• brain: Lessens the risk of jaw fractures, and brain concussion.