A normal friend will teach you how to say hello and thank you in their language.
A Greenlandic friend will order you to say iggoraarsuk (sexy) or itit (ass) to everyone.
A normal friend would feel strange helping you cut the meat on your plate.
A Greenlandic friend will help you cut the skin of reindeer you just hunted.
A normal friend will warn you that guns are dangerous.
A Greenlandic friend will teach you how to hold and shoot a rifle.