backstop

As a noun backstop

is a device that prevents railroad cars from rolling off a railroad track.

As a verb backstop

is to serve as backstop for.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between backstop and backup

is that backstop is a device that prevents railroad cars from rolling off a railroad track while backup is a reserve or substitute.

As a verb backstop

is to serve as backstop for.

As an adjective backup is

standby, reserve or extra.

As nouns the difference between barrier and backstop

is that barrier is a structure that bars passage while backstop is a device that prevents railroad cars from rolling off a railroad track.

As a verb backstop is

to serve as backstop for.

As nouns the difference between backstop and assist

is that backstop is a device that prevents railroad cars from rolling off a railroad track while assist is a helpful action or an act of giving.

As verbs the difference between backstop and assist

is that backstop is to serve as backstop for while assist is to stand (at a place) or to (an opinion).

As nouns the difference between backstep and backstop

is that backstep is a step backwards while backstop is a device that prevents railroad cars from rolling off a railroad track.

As verbs the difference between backstep and backstop

is that backstep is to take a step backwards while backstop is to serve as backstop for.

As nouns the difference between taxonomy and backstop

is that taxonomy is the science or the technique used to make a classification while backstop is a device that prevents railroad cars from rolling off a railroad track.

As a verb backstop is

to serve as backstop for.

In baseball terms the difference between catcher and backstop

is that catcher is the player that squats behind home plate and receives the pitches from the pitcher while backstop is a wall behind home plate.

As nouns the difference between catcher and backstop

is that catcher is someone or something that catches while backstop is a device that prevents railroad cars from rolling off a railroad track.

As a verb backstop is

to serve as backstop for.

In baseball terms the difference between shortstop and backstop

is that shortstop is the infield defensive player that stands between the second baseman and the third baseman while backstop is a wall behind home plate.

As a verb backstop is

to serve as backstop for.