different between perjurer vs forswearer

English

perjure +? -er

perjurer (plural perjurers)

someone who has committed perjury by lying under oath
- 1607: Henry Ainsworth, The confession of faith of certayn English people living in exile, in the Low countreyes
  Here are none exempted or excluded, be they never so prophane or wretched, no Atheist, adulterer, thief, or murderer, no lyer, perjurer, Witch or conjurer, &c· al are one fellowship, one body, one Church.
- 1841: Charles Dickens, The Old Curiosity Shop
  Come in, you false witness, you perjurer, you suborner of evidence, come in!

From Middle English forswerer, forswerere, equivalent to forswear +? -er.

forswearer (plural forswearers)

Send