Hi, good question. いえ(家) = house (physical building) The basic meaning of うち(内) is INSIDE, however, we use it for HOUSE and MY (the group which I belong to). Here are examples: (When we use うち as HOUSE, they are interchangeable.) 私のいえ = 私のうち = my house いえの中 = うちの中 = in the house (When we use うち as MY, they are not interchangeable.) my mother = わたしのおかあさん = うちのおかあさん (not いえのおかあさん) my school (the school where we go to) = わたしのがっこう = うちのがっこう (not いえのがっこう) I hope this helps you. Un saludo.

うち is a home. A place where someone lives and belongs. It could be a house, apartment, or any other building. いえ is a house and refers to the physical building. The building could potentially be empty without anyone living in it, in which case it would not be anyones うち.

Not as far as I know. Generally speaking I prefer うち because いえ Is so similar to いいえ （no）. いえ seems more formal to me, though there's probably not a real difference. P.S. Nice poster.