embrasure

As nouns the difference between crenel and embrasure

is that crenel is the space between merlons in a crenelated battlement while embrasure is any of the indentations between the merlons of a battlement.

In obsolete|lang=en terms the difference between embrasure and reveal

is that embrasure is (obsolete) an embrace while reveal is (obsolete) the side of an opening for a window, doorway, or the like, between the door frame or window frame and the outer surface of the wall; or, where the opening is not filled with a door, etc, the whole thickness of the wall; the jamb.

As nouns the difference between embrasure and reveal

is that embrasure is (architecture|military) any of the indentations between the merlons of a battlement while reveal is the outer side of a window or door frame; the jamb.

As a verb reveal is

to uncover; to show and display that which was hidden.

As nouns the difference between gunport and embrasure

is that gunport is a hatch in the hull of a ship through which a cannon is fired while embrasure is (architecture|military) any of the indentations between the merlons of a battlement.

As a noun embrasure is

(architecture|military) any of the indentations between the merlons of a battlement.

As nouns the difference between crenellation and embrasure

is that crenellation is a pattern along the top of a parapet (fortified wall), most often in the form of multiple, regular, rectangular spaces in the top of the wall, through which arrows or other weaponry may be shot, especially as used in medieval European architecture while embrasure is any of the indentations between the merlons of a battlement.

As nouns the difference between embrasure and embrazure

is that embrasure is any of the indentations between the merlons of a battlement while embrazure is alternative form of embrasure.

As an adjective embrasured

is having embrasures.

As a noun embrasure is

(architecture|military) any of the indentations between the merlons of a battlement.