different between potterer vs patterer

English

potter +? -er

potterer (plural potterers)

patter +? -er

patterer (plural patterers)

(Britain, slang, obsolete) One who patters, or talks glibly.
(Britain, slang, obsolete) A street peddler.
- 1851, Henry Mayhew, London Labour and the London Poor
  The running patterer cares less than other street-sellers for bad weather, for if he "work" on a wet and gloomy evening, and if the work be "a cock," which is a fictitious statement or even a pretended fictitious statement, there is the less chance of any one detecting the ruse.

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