You use 'of' to combine two nouns when the first noun identifies the feature of the second noun that you want to talk about.
I am not sure what "I" want to talk about in the sentence.
Talking about "the feature" or talking about "the second noun"?
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Sign up to join this communityYou use 'of' to combine two nouns when the first noun identifies the feature of the second noun that you want to talk about.
I am not sure what "I" want to talk about in the sentence.
Talking about "the feature" or talking about "the second noun"?
In such case, take an example.
color of an elephant
Two nouns - color and elephant. The first noun 'color' identifies the feature of the second noun 'elephant'.
Now go back to the sentence in concern: Read it this way-
You use 'of' to combine two nouns when the first noun identifies the feature of [the second noun that you want to talk about].
So, to answer, here, you want to talk about 'the elephant' here.