castled vs battlemented

castled and battlemented both are adjectives.

Word	Noun	Adjective	Verb	Adverb
castled	No	Yes	No	No
battlemented	No	Yes	No	No

As adjectives, castled and battlemented are synonyms defined as:

castled and battlemented: having or resembling repeated square indentations like those in a battlement

Other synonyms of castled include castellated, crenelated, embattled.

castled (adjective)	battlemented (adjective)
having or resembling repeated square indentations like those in a battlement	having or resembling repeated square indentations like those in a battlement
	protected with battlements or parapets with indentations or embrasures for shooting through