House
A "house" is essentially a container -- for a person, a family, several families or even a large group with shared interests (think of the term "houses of worship.") In the Bible, a "house" is also a container, but for spiritual things rather than natural things. In various uses a "house" can represent part of the mind, the whole mind, a whole person or even a church. The other nuance to the word "house" is that it is generally used in regards to our affections and desires rather than our thoughts and principles. This makes sense; we tend to engage our thoughts and rationality when we are out in the world doing our work, but when we are inside our houses we are driven most by love for our families and the desire to be good to those we love. So "house" tends to represent the things we want and care about -- which are ultimately the things that define us.
Arcana Coelestia # 6267
6267. 'And Joseph took them both, Ephraim in his right hand to Israel's left' means truth belonging to the understanding, to occupy the second place, 'and Manasseh in his left to Israel's right' means good belonging to the will, to occupy the first place. This is clear from the representation of 'Ephraim' as truth belonging to the understanding, and from the representation of 'Manasseh' as good belonging to the will, dealt with in 5354, 6222; and from the meaning of 'the right' as occupying the first place, and of 'the left' as occupying the second place, as is evident from what is the normal practice in life. The implications of all this will be discussed in what follows below.