the inside of 病(びょう)院(いん) (byōin, “hospital”) and 医(い)院(いん) (iin, “clinic”) / the inside of 寺(じ)院(いん) (jiin, “Buddhist temple”) / the inside of 議(ぎ)院(いん) (giin, “parliament/congress/house”)

spoiler (for a film or a book)

懸念: worry, concern

hardness, the quality of being hard or stiff / (of a person) rigidness, obstinance, being resistant to heeding the opinions of others