Abatis and Log jam

Abatis noun - A line of defense consisting of a barrier of felled or live trees with branches (sharpened or with barbed wire entwined) pointed toward the enemy.

Log jam and abatis are semantically related. In some cases you can replace phrase "Log jam" with "Abatis", this terms are similar.

Abatis and log jam are semantically related. You can use "Abatis" instead a noun phrase "Log jam".