fatman wrote...
"Are blue and green separate colours?"
HALT! The answer is not "of course lol," believe it or not. MOST languages in the world DO NOT have a separate word for "blue" and "green"
Yes; you heard me correctly. MOST languages out there do not have separate words for "blue" and "green."
The english language does not have a single word for oniisan and neesan.
That does not mean "elder brothers" and "elder sisters" are the same thing.
True, but (in the case of "green" and "blue) there are many people from sundry tongues that are adamant in their saying of green being a shade of blue.
Heck, Ancient Greek only differentiated
dark blue from green, calling dark blue "κυανος" and any other shade of blue "χλοÏος" (a word that shares the same root with the word "yellow", and the Irish word "geel/gelu", which means "white").
Modern Greek makes the distinction, however, with the word "μπλου"; a loanword from French "bleu" (which is a loanword from Frankish "blaw", or Old English "blau", itself!)