A person who has to leave their country due to danger is typically referred to as a refugee. Refugees flee their home countries to escape persecution, conflict, or violence, seeking safety and protection in Another Country. They are often granted specific legal protections under international law.
They are usually called refugees. If the danger is war, they are war refugees. If the danger is because they oppose the ruler(s) they are political refugees.
A person who feels danger and gives warning is typically called an "alarmer" or "alarms someone".
Peril
A person who comes from another country is called an immigrant.
A person who settles in a new country is called an immigrant.
traitor is a person who is disloyal to hisown country.
traitor is a person who is disloyal to hisown country.
Nigerien (not Nigerian, spelled with an a)
No. There is a country called Switzerland. Swiss is the adjectival form of Switzerland. You would say a person is Swiss because they are from Switzerland. Likewise, you would say you ate Swiss chocolate if it was from Switzerland.
A person from another country is typically called a foreigner or an international person.
It depends on whether you live there or not. If you do not live there, it is a foreign country. If you live there, it is not a foreign country. Instead, it is called a mother country. ex)A person who lives in America would call Norway a foreign country because he or she does not live there. In contrast, a person who lives in Norway would call Norway his or her mother country because he or she lives there.
A person who leaves a country to go live permanently in another is called an emmigrant,