castellated vs crenelated

castellated and crenelated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
castellated	No	Yes	No	No
crenelated	No	Yes	No	No

As adjectives, castellated and crenelated are synonyms defined as:

castellated and crenelated: having or resembling repeated square indentations like those in a battlement

Other synonyms of castellated include battlemented, castled, embattled.

castellated (adjective)	crenelated (adjective)
having or resembling repeated square indentations like those in a battlement	having or resembling repeated square indentations like those in a battlement