Sometimes when learning new vocabulary I found words that are written in katakana. As far as I know these words are loanwords. Hope this is correct. For better understanding I want to know where the vocabulary is coming from but I don’t know where to look.
I can’t read all-Japanese resources so I’m hoping to find something in English.
Latest example is アヒル which I found in my textbook. Where does it come from?
Hope you can help
Edit: I learned, that katakana is used for more things than loanwords.
Monolingual dictionaries usually have the origin of the word in the header, so even with just basic Japanese you should be able to figure out where it’s from.
E.g. the entry for アルバイト(バイト) in goo showing it’s fromドイツ (Germany) Arbeit: