Outboard and Outer

Outboard adjective - Located away from the midline of a vessel or aircraft.

Outer and outboard are semantically related in external topic. In some cases you can use "Outer" instead the word "Outboard" as a noun or an adjective.

Outer adjective - Situated on the outside or farther out.

Outboard and outer are semantically related in external topic. You can use "Outboard" instead the word "Outer" as a noun or an adjective.