What is noun of honoured?

The Word 'honoured' (honored) is the past participle, past tense of the verb to honour. The past participle of the verb also functions as an adjective (an honoured citizen).

The Word honour is also a noun as a Word for a title for an official of high rank; special recognition given as evidence or a symbol of great respect; a Word for a person or a thing.

The singular noun 'honour' is an uncountable noun as a Word for high respect or esteem.