Black Person
Black People
noun, の adjective
A black person is simply a Black person, kind of like how a 白人 is a "White person," but a different color.
This is a jukugo word, which usually means on'yomi readings from the kanji. Since 人 has two on'yomi readings, here's a mnemonic to help you remember which one to use:
Imagine a Black person you know well wearing coke jeans (こくじん). Yep, jeans made entirely from coke bottles. That's actually a thing. Look it up if you don't believe me.
東京には、大きな黒人のコミュニティがあります。
Tokyo has a big community of Black people.
日本には、まだまだ黒人用のシャンプーやファンデーションが少ない。
There are still not many shampoos and foundations for Black people in Japan.
母は黒人で、父はアジア人です。
My mother is Black and my father is Asian.