Outpost and Presidio

Outpost noun - A military post stationed at a distance from the main body of troops.

Presidio and outpost are semantically related In some cases you can use "Presidio" instead a noun "Outpost".

Presidio noun - A fortress established in the southwestern United States by the Spanish in order to protect their missions and other holdings.

Outpost and presidio are semantically related in reinforced position topic. Sometimes you can use "Outpost" instead a noun "Presidio".