rata : rats
The Illunse word for rats (nominative plural) is rata. Rata is a last name. Rata means rat (singular) in Catalan, Galician and Spanish. In Finnish rata means track, line. Rata means installment in Italian, Polish and Serbo-Croatian. In Maori rata means tame, quiet. Rata is the name of places in Indonesia, Pakistan, Romania, Soloman Islands, Vanuatu, New Zealand and Peru.
Rats in Latin is rati. Rats in Old English is rætas.
Rat in Illunse is ratu, which is a mix of the Latin word (ratus) and the Old English word (ræt).
If you haven't already noticed, my Illunse nominative case plurals are a bit complicated. I use guidelines that take into account the grammatical gender of the Latin and Old English words.
Here's a link to Rat, in J.R.R. Tolkien's words.