Gherkin vs. Cornichon: What's the Difference?

Gherkin and Cornichon Definitions
Gherkin
A small cucumber, especially one used for pickling.
Cornichon
A crisp, sour pickle made from a small cucumber.
Gherkin
A pickle made from such a fruit.
Cornichon
A dill-pickled gherkin cucumber.
Gherkin
A vine (Cucumis anguria) native to Africa and widely cultivated especially in the West Indies, having prickly fruit often harvested when immature for pickling.
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Cornichon
A French-style pickled miniature cucumber.
Gherkin
The fruit of this plant.
Gherkin
A small cucumber, often pickled whole.
Gherkin
(slang) The penis.
Gherkin
A kind of small, prickly cucumber, much used for pickles.
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Gherkin
See Sea gherkin.
Gherkin
Any of various small cucumbers pickled whole
Gherkin
Small prickly cucumber