evensong vs canonical hour

evensong and canonical hour both are nouns.

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

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

evensong: the sixth of the seven canonical hours of the divine office; early evening; now often made a public service on Sundays
canonical hour: (Roman Catholic Church) one of seven specified times for prayer

evensong (noun)	canonical hour (noun)
(Anglican Church) a daily evening service with prayers prescribed in the Book of Common Prayer	(Roman Catholic Church) one of seven specified times for prayer
the sixth of the seven canonical hours of the divine office; early evening; now often made a public service on Sundays