Adjectives do.
example: stickiness is the nominal form of sticky.
This can be useful because if we do not know what objects we’re talking about, we can talk vaguely about the qualities and give it a quantifiable form.
it’s only at this point that we can introduce mathematics
for example, could everything in the universe be described as sticky?
yes
but there are many ways to be sticky including repulsive – but is it repulsive or sticky to something else?
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