What's the difference between pilewort and pipewort?

Pilewort

Definition:

• (n.) A plant (Ranunculus Ficaria of Linnaeus) whose tuberous roots have been used in poultices as a specific for the piles.

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Pipewort

Definition:

• (n.) Any plant of a genus (Eriocaulon) of aquatic or marsh herbs with soft grass-like leaves.

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