What is the right form to use when talking about plural citizenship?
"We are Italian" or "we are Italians"? (or American, Or German or any other ending with "*an") Same issue for "Saudi" or "Saudies", "Israeli" or "Israelies", etc. I understand that one is used as a noun and one as an adjective, but which is right and why?
And on the same topic, how can for example, "Chinese", "Taiwanese" or "Japanese" be used differently for plural and singular?
And what should one do with "Korean" - is "Koreans" even valid? Somehow it sounds strange to say "Koreans".
EDIT I : as result of the comments :
I am not specifically talking about "nationality" . the same can be asked about a city:
would It be "Londonian" or "Londonese" , "New-Yorkean" or "New-Yorker" "New Yorkian" or "New-yorkese"?
..and also about non-human objects or concepts like books, food, drinks, art , company etc.
I am sorry if I combine different concepts here , But I have a difficulty in pin pointing a common logic .