It's not exactly important if we are talking about labels of the citrus. You're correcting me as if we both agree on the meaning of the label of "brits". Look at the modern britain. It's as rainbow as it goes. So it's not important there are plenty of citrus to go around: grapefruit, tangerine, orange, mandarin, clementine, etc.. What about those tasty and weird fruit called lychees? Sounds like leeches. Less is more. Both words are adjectives. War is peace. Both words are nouns, labels, etc...