This is the 2013th most frequent Korean word.
부동산을
"Real estate."
In this sentence, '부동산을' is used as the direct object of the verb '구입하다' (to purchase). It refers to real estate as the thing being acquired.
저는 부동산을 구입하기 위해 돈을 저축하고 있어요.
I am saving money to purchase real estate.
Here, '부동산을' serves as the direct object of '팔다' (to sell). It signifies the real estate that is the subject of the sale.
친구가 부동산을 팔려고 광고를 냈어요.
My friend posted an ad to sell real estate.
In this example, '부동산을' operates as the object of '투자하다' (to invest in). It denotes real estate as the area for investment.