Another way to plural ending to a word! Love it. Or did I miss out on adding a ''t'' in one of the tutorials?
Nah. Plurals in Gaelic are irregular and pretty chaotic to be honest.
Beantain is another plural. It means mountains. Even as a native bilingual that one trips me up.
There are some sort of common ones, but nothing that you can really tie a pattern to for sure. I don't think we've hit the pluralisation of the adjectives yet ;)