>Here's your tuna fish sandwich, anon
As opposed to what, a tuna bird sandwich?
One is a fish, the second is a musical instrument, and the third is an adhesive
One's type of fish, one's a musical instrument, and one's an adhesive.
They're all found in different shapes.
They're very different sizes.
They each have a different scent.
One is edible, one is inedible, and one is occasionally non-toxic but offers no nutritional value when eaten.