Contextual explanation: Covert theft and removal of livestock. 
Abactor refers to a person who steals cattle or livestock, historically known as a rustler. This concept is best understood as an action—specifically, the deliberate and covert act of taking and driving away animals belonging to others, resulting in the loss or destruction of property for the rightful owner.

Themes: Crime and property loss. 
Abactor is closely tied to the theme of crime, particularly theft, and the resulting loss of property. It highlights the social and economic impact of criminal actions on individuals and communities, especially in agricultural or pastoral contexts where livestock represents significant value.

Nuance: Livestock-specific theft. 
What distinguishes abactor within its category is its focus on the theft of living animals, rather than general theft or destruction. The nuance lies in the method (covert removal and driving away) and the specific target (cattle or livestock), setting it apart from other forms of property crime.