Which is what, specifically?

I think we do it indexicly. I use a word in context, and since you have a parallel expedience in the same context, I never have to make clear exactly (at least in terms of Intension) what I mean, you have the same experience and some can infer the label. Ask an automation "do you have emotions?" and it may observe human use of the word emotion, conclude that "emotion" is an automatic behavioral response to conditions and changes in conditions that affect one's utility function, and declare that, yes it does have emotion. Yet, of course this completely misses what we meant by emotion, which is a subjective quality of experience.

Can you make a being come to understand the concept of subjectivity, it doesn't itself embody a subjective perspective?

Alternatively, if you asked me “What is red?” I could point to a stop sign, then to someone wearing a red shirt, and a traffic light that happens to be red, and blood from where I accidentally cut myself, and a red business card, and then I could call up a color wheel on my computer and move the cursor to the red area. This would probably be sufficient, though if you know what the word “No” means, the truly strict would insist that I point to the sky and say “No.”

This only communicates if the person you are trying to explain "red" to can perceive color.

The problem is, that my subjective experience of red is always accompanied by a particular range of wavelengths of light. Yet, when I say the word red, I don't mean the photons that are of that frequency, I mean the subjective experience that those photons cause. But, since the one always accompanies the other, someone naive of color might think I, mean the mathematical features of the waves reflected from the objects to which I'm pointing.