Tom Anderson typed

Let's not assume that words or phrases have only one meaning, either.

Some words or phrases *do* have only one meaning - if i said "i've got a
bit of thrombosis", meaning i had a stitch, that would be wrong, wouldn't
it?

Yup!

The term "in shock" refers to hypovolemic shock, and always has done;

pedant
The term 'shock' means 'a state of reduced tissue perfusion'. Not all
shock is hypovolaemic ( a state of reduced circulating blood volume, eg
due to blood loss)

There is also: septic shock (due to bacteria)
cardiogenic shock (reduced effective heart pumping action)
neurogenic shock (eg due to nervous system damage)

To state but a few
pedant

shock was not something you could be _in_ until that use was coined. It's
true that people have started using it to mean 'shocked', but, like people
using 'flu' to mean 'a bad cold', it's wrong.

Indeed.
Medically, 'shock' is usually an intensive care type problem; fainting
or hyperventilating after seeing some dreadful event is not.

--
Helen D. Vecht:
Edgware.