Prepositions beneath underneath etc...
Use:
Grammar
Prepositions beneath underneath among between
Remember that there are different forms of prepositions.

Structure:
As a preposition that describes a place, we use between two
people or things and among when it is three or more.
The keys fell between the chair and the desk
The report was among the document he had misplaced.

Between is used to discuss relationships
The dynamic between the two was impressive.
Using between for choice.
I have to decided between two schools for my studies.

When something is shared.
Between the CEO and the CFO they have a lot of power.

Expressions
Among other things
Between ourselves
Among other things
Between you and me

Also
Underneath can replace under
Beneath is a formal use of under
To express that something is not up to a standard you can use beneath.
Working with that company is beneath us.