Every sector has its own technical terms and definitions.
One task of the CEN (Comité Européen de Normalisation - European Committee for Standardization) was to establish a definition standard, the EN 1885. This determines the sector's 'technical terms'.
Here are some extracts of the most important definitions in EN 1885:
DownPlumage that forms the undercoating of waterfowl, consisting of clusters of light, fluffy filaments growing from one weakly discernible down core but without any quill shaft or vane.
|Goose down||Eiderdown: collected from the nests of Eider ducks.|
Horny integument of fowl. It has a shorter and softer barb than a contour feather and, unlike down feathers, a well-developed quill.
|Goose feather||Duck feather|
The EN 1885 standard of June 1998, which contains more definitions on the subject of 'down and feathers', can be obtained from: