gentile
A person who is not Jewish.
Gentile is a term meaning someone who is not Jewish. If you're reading the Bible or learning about Jewish history and culture, you'll often see this word used to distinguish between Jewish people and non-Jewish people.
The term is mainly descriptive. It's a way of identifying religious and cultural identity. A Christian person can be called a gentile. A Muslim person can be called a gentile. An atheist can be called a gentile. Anyone who isn't Jewish can fall into this category.