Difference between liquidity and marketability

Liquidity means the easiness of a security or asset that can sell at the intrinsic value of that asset. For example, if you want to sell a flat with intrinsic value of HKD 3 million. You sell that flat immediately at HKD 3 million through a agency. You can say the flat has high liquidity.
However, marketability refers to the easiness to sell asset into cash, but without considering the intrinsic value (most likely below the intrinsic value for rapid converting it into cash). Using the similar example, if you can only sell that flat immediately at HKD 2.5 million, the marketability is high but the liquidity is low.