Contextual explanation: Social engagement with influential individuals. 
Hobnobbing is best understood as a form of interaction—specifically, the act of mixing socially with influential, wealthy, famous, or high-status people, often with the intention of building connections or gaining social advantages. It involves deliberate participation in social settings where status and influence are present, and is characterised by purposeful networking and relationship-building.

Themes: Social mobility and networking. 
Hobnobbing is closely tied to the theme of social mobility, as it often serves as a means for individuals to access new opportunities, resources, or circles of influence. The concept is also central to networking, highlighting the strategic cultivation of relationships for personal or professional advancement.

Nuance: Strategic social positioning. 
What distinguishes hobnobbing within its category is its intentional and strategic nature—the focus is not merely on casual socialising, but on engaging with specific individuals or groups to enhance one's own status, access, or opportunities. This sets it apart from general social interaction by emphasising the calculated pursuit of social advantage.