Irish learners, I think this is the first word that we can say is definitely related to the Irish equivalent without being a loan from English or another language (well, maybe dydd/Dé?). This sounds almost the same as Irish "nó", also meaning "or".
The only English loanwords I've seen so far are beic and car.
This course also includes "Sori" though, which isn't really a Welsh word. I've never heard it in Welsh. What we typically say is "Mae'n ddrwg gen i" (It's bad unto me), however that's not quite the same in usage as "sorry" which can be purely sympathetic.
There is also mac which is mab in Welsh & Breton ("son"), ainm and enw (is it right?) meaning "name", dubh and du ("black"), etc... Q-Celtic and P-Celtic languages are distantly related, but still related!
Can anyone advise if the pronunciation given here is correct? It kinda sounds like 'rei'. Is that 'n' really meant to sound like an 'r'?