stacher
/ˈstætʃər/Definitions
1. noun
A person who collects or pursues debts, especially for a creditor.
“The stacher was sent to collect the unpaid loan from the defaulting borrower.”
2. noun
A person who follows or pursues someone, especially for a particular purpose.
“The paparazzi were acting as stakeholders, trying to get a photo of the celebrity.”