I probably (should) know the answer but for the life of me, I cannot find certain high-viz UI strings to translate, in particular in the column beneath the Wikipedia logo when just browsing the English Wikipedia:
Contents
Featured content
Interaction

Now here's the thing though - those items do not occur in the Gaelic Uicipeid i.e. https://gd.wikipedia.org/wiki/Pr%C3%AComh-Dhuilleag has no menu item for
Contents
Featured content
(adding image but not sure if it will come through)


but (perhaps because I use a Gaelic browser) the *English* Wikipedia UI has (for as long as I can remember been in Gaelic, mostly), i.e. even on the English Wikipedia, it currently says
Wikipedia
The Freen Enc
Prìomh dhuilleag
Contents
Featured content
Cùisean an latha
etc etc


Are there UI items that simply do no appear for translation in all languages?

Cheers

Michael