It's important to note that "igloo" is not a universal Inuit term for all snow shelters. While it refers specifically to the domed snow house, there are other types of shelters that the Inuit build, such as "qarmaq" (a temporary shelter made of snow blocks) and "tupiq" (a semi-permanent, rectangular house built with a frame and covered with animal skins).
So, while "igloo" is a widely used word to describe the snow house, it's just one type of snow shelter used by the Inuit.