Tub Style: Drop-in, Undermount, Alcove or Freestanding?

Oval Freestanding Tub with Flat Rim

There are 4 Basic Styles of tub installation
Many baths can be Drop-in or Undermount while others are specifically for Freestanding or Alcove.
Some tubs are designed for drop-in installation, where the tub is “dropped-in”, or sits in, a hole cut out of the tub “deck”, or surrounding, supporting area, made of material such as …