Clear and Glair

One common, one rare,
They share the same root
Of transparency,

Sure, but, before that,
Of sound, ringing sound,
Clear as a bell, right?

Now the common one
Has stayed translucent,
While the rare one’s gelled

Into a mucus,
A whitish sputum,
Nauseating term.

Meanings don’t diverge,
Significations
Do. It isn’t clear

What clarity means
Until you decide
It can’t be glairy,

But still it could be.
An egg’s uncooked white
Shines clear in the light.