Under international law, a refugee is someone outside his/her country of nationality or habitual residence; has a well-founded fear of persecution because of his/her race, religion, nationality, membership in a particular social group or political opinion; and is unable or unwilling to avail himself/herself of the protection of that country, or to return there, for fear of persecution. They are distinguished from economic migrants who have voluntarily left their country of origin for economic reasons.
Asylum seeker - someone who has fled from her or his country and is seeking refugee status in another country.
Internally displaced person - someone who has left her or his home in fear of persecution, but has not crossed an international border.
Refugee - someone who has left her or his country or is unable to return to it owing to a well founded fear of persecution for reasons of race, religion, nationality, membership of particular social group or political opinion.