lightly armoured vs lightly armored

lightly armoured and lightly armored both are adjectives.

Word	Noun	Adjective	Verb	Adverb
lightly armoured	No	Yes	No	No
lightly armored	No	Yes	No	No

As adjectives, lightly armoured and lightly armored are synonyms defined as:

lightly armoured and lightly armored: equipped with armor heavy enough to provide protection against fire from light arms

lightly armoured (adjective)	lightly armored (adjective)
equipped with armor heavy enough to provide protection against fire from light arms	equipped with armor heavy enough to provide protection against fire from light arms