different between moonwort vs moorwort

English

From moon +? wort.

moonwort (plural moonworts)

A small fern, Botrychium lunaria (lesser moonwort); later, any member of the genus. [from 15th c.]
- 1653, Nicholas Culpeper, The English Physician Enlarged, Folio Society 2007, p. 194:
  Moonwort is an herb which they say will open locks, and unshoe such horses as tread upon it.
(now US, Britain regional) Lunaria annua (greater moonwort); also known as Honesty and Actual Honesty. [from 16th c.]

moor +? wort

moorwort (usually uncountable, plural moorworts)

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