house: a bounded, enclosed space and, by extension, the people, the family line, the temple, or the place it holds together.
At its root this word names an enclosed space and what that space contains. From the four walls of a dwelling, the meaning reaches outward in every direction the English word "house" also travels, and several it does not. The people who share the dwelling are the household; their descendants over time are the family line; a whole people can be one "house" ("the house of Israel"); the building set apart for God is his house; even a small box that holds something, or simply the inside of a thing, can be its "house."
These are not separate words that happen to be spelled alike. They are one picture scaled up and down: a defined, contained whole with an ordered life inside it. The same image fits a single family under one roof, a clan, a royal line, a nation, and the temple where God is said to live. That is why a single Hebrew sentence can slide from the building to the family in it without missing a step, and why "the house of David" can mean the palace, the ruling dynasty, or the living relatives depending only on the surrounding words.
The reach goes past anything English "house" carries. A grave can be called a person's "eternal house," the place appointed for everyone who lives. A town takes its name from the god worshipped there, so Bethel means "house of God." A tent, by contrast, is not this word but its opposite number, the movable dwelling (אֹהֶל) set against the settled, built one; a palace or grand temple hall has its own imposing word (הֵיכָל); and God's portable sanctuary in the wilderness is the tabernacle (מִשְׁכָּן), not the ordinary house.
Because the spread is so wide, no single English word covers it, and translators choose by context: "house" for the building, "household" or "family" for the people, "dynasty" or "line" for the descendants, "temple" for God's house, "box" or "holder" for the container uses, and plain "inside" for the interior of a thing. The Greek οἶκος carries much of the same range, which is why it so often stands in for this word.