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Social Capital: Exploring the theoretical foundations of community ...
bera-journals.onlinelibrary.wiley.com
Theorists commonly identify two forms. There is “bonding” social capital created within existing social groups and “bridging” social capital created by relationships between existing social groups or across conventional lines of social segregation.
The Relationship Is the Richness

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onlinelibrary.wiley.com
We [also] build our sense of civic identity and opinions about government through social interactions. […] Our social capital — which Putnam defines as the overarching belief about society that facilitates co-operation — diminishes when we lose opportunities to engage with people outside of our regular social networks.