Crenellation vs. Rampart: What's the Difference?

Crenellation and Rampart Definitions
Crenellation
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.
Rampart
A fortification consisting of an embankment, often with a parapet built on top.
Crenellation
(uncountable) The act of crenellating; adding a top row that looks like the top of a medieval castle.
Rampart
A means of protection or defense; a bulwark.
Crenellation
(countable) Any of a series of notches with fancied resemblance to such battlements, as for example around the bezel of a flashlight.
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Rampart
To fortify or surround with a rampart.
Crenellation
A rampart built around the top of a castle with regular gaps for firing arrows or guns
Rampart
A defensive mound of earth or a wall with a broad top and usually a stone parapet; a wall-like ridge of earth, stones or debris; an embankment for defensive purpose.
Crenellation
The action of constructing rampparts with gaps for firing guns or arrows
Rampart
A defensive structure; a protective barrier; a bulwark.
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Rampart
That which defends against intrusion from outside; a protection.
Rampart
A steep bank of a river or gorge.
Rampart
To defend with a rampart; fortify or surround with a rampart.
Rampart
That which fortifies and defends from assault; that which secures safety; a defense or bulwark.
Rampart
A broad embankment of earth round a place, upon which the parapet is raised. It forms the substratum of every permanent fortification.
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Rampart
To surround or protect with, or as with, a rampart or ramparts.
Those grassy hills, those glittering dells,Proudly ramparted with rocks.
Rampart
An embankment built around a space for defensive purposes;
They stormed the ramparts of the city
They blew the trumpet and the walls came tumbling down