In the word "afternoon tea"(the tea that is served in afternoon) the word 'afternoon' is an uncountable noun as OALD shows.
In the word "English countryside"(the countryside that is in England) the word 'English' becomes adjective.
But why? I can't see the difference in the work these words do.
Other examples are "egg noodles", crocodile shoes", "sports car"
and "double bed", "favourite movies", "paper tiger". (Interestingly OALD does not count "paper" as adjective.)
Can somebody kindly explain me please. Thank you!