As nouns the difference between linnet and winnet

is that linnet is a small passerine bird, species: Carduelis cannabina in the finch family Fringillidae, native to Europe, western Asia, and north Africa while winnet is a small piece of faeces stuck to the hairs around the anus of a mammal.

As a proper noun Linnet

is {{given name|female|from=English}} derived from the linnet bird. Occasionally recorded since the 19th century.