recollection-n; 3 Senses

Sense Number 1: the faculty or general ability of memory

Commentary: RECOLLECTION[+quality][+faculty][+cognitive][+remembering]

The brain surgery apparently did not impair the patient's faculty of recollection.
Recollection of familiar words and objects was diminished by his stroke.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: a specific event of remembering something

Commentary: RECOLLECTION[+event][+mental][+remembering]
NOTE: implies a specific act of a subject, parallels the verb usage John recalled X -> John's recollection of X
NOTE: does not occur in the plural

John's sudden recollection of where he'd left his keys was a relief to everyone.
The victim's recollection of the trauma made her hands tremble.

WordNet 3.0 Sense Numbers: 2

Sense Number 3: facts or previous experiences that are remembered

Commentary: RECOLLECTION[+entity][+mental][+information][+remembered]
NOTE: refers to the information content of recall, -not- the process of it (Sense 2)
NOTE: can occur in the plural.
NOTE: occurs in phrases X HAVE recollection(s)

The book is based on the general's recollections of that battle.
My recollections of that summer are rather vague at this point.
The defendant claims to have no recollection of that night.

WordNet 3.0 Sense Numbers: 3