This is the 5563rd most frequent Japanese word.
きそん
"きそん" (毀損) means "damage" or "harm."
Here, きそん refers to the state of something being harmed or damaged.
この地域の自然環境がきそんされている。
The natural environment of this region has been damaged.
In this sentence, きそん describes the potential harm cultural properties might face due to industrialization processes.
工業化により文化財がきそんの危機にさらされている。
Due to industrialization, cultural properties are at risk of being harmed.
The term きそん refers to the state of harm or deterioration that needs restoration in this context.