ceremoniousness vs formality

ceremoniousness and formality both are nouns.

Word	Noun	Adjective	Verb	Adverb
ceremoniousness	Yes	No	No	No
formality	Yes	No	No	No

As nouns, formality is a hypernym of ceremoniousness; that is, formality is a word with a broader meaning than ceremoniousness:

Other hypernyms of ceremoniousness include formalness.

ceremoniousness (noun)	formality (noun)
a ceremonial manner	compliance with formal rules
	a manner that strictly observes all forms and ceremonies
	a requirement of etiquette or custom