different between colewort vs holewort

English

From Middle English coolwort, coulwort, cole-wort, caule worte, equivalent to cole +? wort.

colewort (usually uncountable, plural coleworts)

A plant of the genus Brassica; now specifically, a Brassica plant without a head used for food, such as kale.
- 1665, Robert Hooke, Micrographia:
  [W]e may observe that water will more readily wet some woods then others; and that water, let fall upon a Feather, the whiter side of a Colwort, and some other leaves, or upon almost any dusty, unctuous, or resinous superficies, will not at all adhere to them, but easily tumble off from them, like a solid Bowl […].

holewort (uncountable)

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