pursuit-n; 2 Senses

Sense Number 1: The physical act of following in an effort to overtake or capture.

Commentary: PURSUIT[+event][+movement]

The culprit ran and the cop took off in pursuit.
Anything is justified in the pursuit of a fleeing criminal.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: An activity that occupies one's time and focus.

Commentary: PURSUIT[+event]

His pursuit of his dreams was admirable.
Piano and violin are just two of her pursuits.
They criticized the boy for his limited pursuits.

WordNet 3.0 Sense Numbers: 2, 3, 4