How do we tell when something is the same?

colour, sound, taste, shape, touch, smell,

How do we know when something means the same?

        word, image, text, icon, chant, prayer,

How do we know when something feels the same?

        knowledge, wisdom, information, instinct, faith, belief,

How do we know when something works the same?

        method, machinery, technology, design, experiment, style,

How do we know when something is different?