Ladder or Stepladder?

[Jinx]

A square is a rectangle, but not all rectangles are squares. Some are, though.

A stepladder is a ladder, but not all ladders are stepladders. Some are, though. Like the one in the picture.

EDIT: Did anyone else have to go through these kind of logic puzzles as part of an IQ test for high school, where they try to figure out which class you go in? xD

If all Florbs are Floobs, and all Floobs are Glorps, are all Florbs Glorps?

I work in construction, and if you called that a step ladder on site you would get laughed at. Step ladders are small, ladders are tall, whether they lean against a wall or stand up as an A-frame. Also, proper A-frame ladders can be opened out straight and leaned up against a wall for extra height.

Phil has declared it so.