For example, a blueberry is blue fruit and if the fruit becomes yellow, is it called 'Yellow blueberry'? That is, 'yellow' is modifying 'blueberry'?

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    A blueberry is a species of fruit, and immature blueberries are green, so it's perfectly acceptable to refer to a "green blueberry" as meaning one that isn't ripe yet. Commented Feb 19, 2021 at 3:01
  • Yes: "yellow" is an adjective modifying the noun "blueberry".
    – BillJ
    Commented Feb 19, 2021 at 8:38
  • Curiously, it turns out I completely agree with the assertion The color of green blackberries is red. In that context, black simply identifies a particular variety of berry, and green means unripe, so only red is used "literally" to identify a specific colour. Commented Feb 19, 2021 at 17:25

1 Answer 1


In every compound noun the first noun functions as an adjective. School Student. My brother - here my functions as possessive adjective. Blueberry has many types it is not appropriate to say yellow blueberry; however, we can use the yellow blueberry.

  • 'It is not appropriate' means there's no yellow blueberry in reality but there could be imaginary yellow blueberry or yellow blueberry drawing?
    – user127881
    Commented Feb 19, 2021 at 2:33
  • Then it is a yellow blueberry drawing. Here yellow functions as an adjective. Commented Feb 19, 2021 at 2:37
  • That's incorrect: in "my brothers", "my" is a possessive pronoun functioning as a determiner. Also, "my brother" is not a compound noun, but a noun phrase, a syntactic construction consisting of "brother" as head and "my" as determiner.
    – BillJ
    Commented Feb 19, 2021 at 8:45
  • Hey there, My functions as an adjective in the above sentence. Mine is possessive pronoun. Try to expand your knowledge of English grammar. Commented Feb 19, 2021 at 16:06

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