steel-plated vs armour-clad

steel-plated and armour-clad both are adjectives.

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

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

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

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