armor-clad vs armour-plated

armor-clad and armour-plated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
armor-clad	No	Yes	No	No
armour-plated	No	Yes	No	No

As adjectives, armor-clad and armour-plated are synonyms defined as:

Other synonyms of armor-clad include armor-plated, armour-clad, steel-plated.

armor-clad (adjective)	armour-plated (adjective)
covered with heavy steel	covered with heavy steel