Contextual explanation: Attempt to influence policy decisions. 
Lobbying is best understood as a societal process—specifically, the act of attempting to influence government decisions or public policy by persuading officials to support a particular position. It is a structured effort, often undertaken by individuals, organisations, or interest groups, to shape legislative or regulatory outcomes in line with specific interests.

Themes: Influence and advocacy. 
Lobbying is closely tied to the theme of influence, as it centres on efforts to affect the direction of public policy and decision-making. Advocacy is also a core theme, since lobbying typically involves representing the interests or concerns of a group to those in power.

Nuance: Formalised persuasion in governance. 
What distinguishes lobbying within its category is its formal and often regulated nature—unlike informal persuasion, lobbying is recognised as a legitimate, sometimes institutionalised, channel for stakeholders to participate in governance and policy formation.