If I want to move into some terrain , such as woods , i order a unit to "collide" with the terrain , and then the unit is placed in the terrain ?

But if I collide with terrain I take a panic token ? Or is that just if I collide with an enemy unit ?

Panic token is an enemy unit effect. Terrain simply stops you unless it has a special effect annotated on its card (deadly for instance).

You don't take a panic token for colliding with any obstacle, you take panic tokens for either colliding with an enemy without using a charge modifier OR for colliding with terrain that has the Taxing keyword, like the Swamp.

1 minute ago, Tvayumat said:

You don't take a panic token for colliding with any obstacle, you take panic tokens for either colliding with an enemy without using a charge modifier OR for colliding with terrain that has the Taxing keyword, like the Swamp.

You also take a panic token for charging and NOT colliding with an enemy.

Just now, rowdyoctopus said:

You also take a panic token for charging and NOT colliding with an enemy.

Also true.

I was thinking of instances where collision causes a panic.

Just now, Tvayumat said:

Also true.

I was thinking of instances where collision causes a panic.

Ah, good call given the context of the thread

Thanks guys.