Splendour is a related term of augustness.
As nouns the difference between splendour and augustness
is that splendour is while augustness is the state or quality of being august or noble.
splendour
English
Noun
(-)
Usage notes
The standard spelling in modern British English is splendour', with ' splendor being the American and dated British spelling.
augustness
English
Noun
(head)
The state or quality of being august or noble.