different between derny vs ferny

English

Named after the French manufacturer of the original derny bicycle, Roger Derny et Fils.

derny (plural dernies)

fern +? -y

ferny (comparative fernier, superlative ferniest)

Of, or pertaining to ferns. (The addition of quotations indicative of this usage is being sought:)
Resembling or characteristic of a fern, in appearance, smell, etc.
- 1942, Emily Carr, The Book of Small, “Time,” [1]
  All kinds of mosses grew by the stream—tufty, flat, ferny, and curly, green, yellow and a whitish kind that was tipped with scarlet sealing wax.
- 1954, William Golding, Lord of the Flies, London: Faber & Faber, Chapter One,
  Ralph had stopped smiling and was pointing into the lagoon. Something creamy lay among the ferny weeds.
Covered in or filled with ferns; flanked or surrounded by ferns.
- 1922, Katherine Mansfield, “At the Bay” in The Collected Stories of Katherine Mansfield, Penguin, 2007,
  And from the bush there came the sound of little streams flowing, quickly, lightly, slipping between the smooth stones, gushing into ferny basins and out again; and there was the splashing of big drops on large leaves […]

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