sext vs canonical hour

sext and canonical hour both are nouns.

Word	Noun	Adjective	Verb	Adverb
sext	Yes	No	No	No
canonical hour	Yes	No	No	No

As nouns, canonical hour is a hypernym of sext; that is, canonical hour is a word with a broader meaning than sext:

sext: the fourth of the seven canonical hours; about noon
canonical hour: (Roman Catholic Church) one of seven specified times for prayer

sext (noun)	canonical hour (noun)
A message with sexual content	(Roman Catholic Church) one of seven specified times for prayer
the fourth of the seven canonical hours; about noon