Niccea Majeare
Why do we have an animal called a fly, but none called a walk?
Correlation:
Why is the orange the only fruit with a color name?
Fly is a slang term for the family of insects that have two wings, and since their survival and their adult life is spent using their two wings, they were called flies
Walking is something so common, it doesn't attach itself to something in particular
I was actually curious enough to look it up in wikipedia, since I felt like it o.o;
"The word orange is derived from Sanskrit nāraṅgaḥ "orange tree."[6] and in Telugu "Naringa". The Sanskrit word was borrowed into European languages through Persian nārang, Armenian nārinj, Arabic nāranj, (Spanish naranja and Portuguese laranja), Late Latin arangia, Italian arancia or arancio, and Old French orenge, in chronological order. The first appearance in English dates from the 14th century. The forms starting with n- are older; this initial n- may have been mistaken as part of the indefinite article, in languages with articles ending with an -n sound (e.g., in French une norenge may have been taken as une orenge). The name of the colour is derived from the fruit, first appearing in this sense in 1542."
It just so happens that in english, the color and fruit are spelled the same