The tag alias #51292 immobilized -> immobilization has been approved.

Reason: These tags are just different tenses of each other and are pretty much synonymous in their usage. Immobilized has no aliases or implications yet and only has a few number of posts.

EDIT: The tag alias immobilized -> immobilization (forum #307206) has been approved by @Millcore.

The tag alias immobilized -> immobilization (forum #307206) has been approved by @Millcore.

Since this got approved, it might be worth revisiting topic #29464.