This is the 123rd most frequent Japanese word.
いえ
House; home.
In this sentence, 'いえ' is used as a noun meaning 'house.'
いえが大きいです。
The house is big.
Here, 'いえ' is functioning as an interjection meaning 'no.'
いえ、違います。
No, that's incorrect.
In this context, 'いえ' is once more used as a noun referring to 'house,' and it appears as part of a larger phrase indicating possession.