Outer and Open

Outer adjective - Situated on the outside or farther out.

Open and outer are semantically related in outside topic. In some cases you can use "Open" instead an adjective "Outer".

Open adjective - Allowing passage without obstruction.

Outer and open are semantically related in place topic. Sometimes you can use "Outer" instead an adjective "Open", if it concerns topics such as outside.

Nearby Words: opening, openness, opened, opener