The visible light combination of red and yellow has a particular frequency on the electromagnetic spectrum. Objects such as orange citrus fruits have compounds in their skins that absorb all (or most) of the visible light, except for that in the frequencies between red and yellow. The reflected light that we see is what we call orange.
A clementine.
A fruit that looks like an orange is a tangerine.
One looks like an orange, the other looks like a violet.
Because It Just Does
tangerines are smaller than an orange, clementines are even smaller * The smallest orange-like fruit is the kumquat.
they are orange and brownish with orange claws and feet
A smaller penguin.
A bird that looks like a smaller version of a seagull is called a tern.
It looks like your common orange juice.
the earth
Because fire looks like fire and it has some orange in it.
Its end looks like a navel, which is a bellybutton