N4 - 二階建てにかいだて
two storied
N3 - 建設けんせつ
construction, establishment
N3 - 建築けんちく
construction, architecture
N2 - 建つたつ
to erect, to be erected, to be built
N1 - 再建さいけん
rebuilding, reconstruction, rehabilitation
N1 - 建前たてまえ
face, official stance, public position or attitude (as opposed to private thoughts)