I m in agreement with what has been posted here.
My take is that
The american saw teeth survival knives
Was more of a fad unnaturally spawned by hollywood dramatics.
I don't know if it was based upon the military concept of survival.
Which btw, had different knives to suit particular mission requirements.
Unlike civillian bushcraft knives which were built and based upon years of actual fieldcrat experiences and preferences
It was Promoted by the brits as a more refined and sensible type of field knife.
Problem was there had to be a particular blade styling to fit these terms correctly.
But somewhere between rambo and bear grylls
Marketing and popular media ignorance had blurred the differences.
To an extend that no distinction remains.
It has become an interchangeable term
Even more so with the demise of the popularity of sawbacks ages ago.
Imho, the terms, survival and bushcraft
Would generally be taken to mean
As describing the purpose or an action
To forage or live off the land.
Rather than to mean a particular form of knife type.
Thru adding the word "knife" as some form of suffix.
When it comes to choosing such an expedition knife,
Every terrain would have ts own form of challenges.
And something built to fit temperate regions
Might not be entirely ideal in the dense tropics.
Or wetlands or a desert.
Be careful not to fall for colorful descriptive terms.
When Your survival might actually have to depend on it.
https://en.wikipedia.org/wiki/Bushcraft