Ethiopian as a noun emphasizes a person's connection to Ethiopia, often implying shared culture or heritage. During the meeting, the Ethiopian shared stories from his homeland.
Pro Tip 2/3
Not Just Location
It's not just where someone's from, but can include anyone of Ethiopian descent, even if born elsewhere. She considers herself Ethiopian, although she was born in Canada.
Pro Tip 3/3
Ethnic Diversity
Ethiopia is diverse; calling someone Ethiopian doesn't specify their ethnicity, like Oromo or Amhara. He is Ethiopian, with his family hailing from the Amhara region.