enigmatic canon vs enigma canon

enigmatic canon and enigma canon both are nouns.

Word	Noun	Adjective	Verb	Adverb
enigmatic canon	Yes	No	No	No
enigma canon	Yes	No	No	No

As nouns, enigmatic canon and enigma canon are synonyms defined as:

enigmatic canon and enigma canon: a canon in which the entrances of successive parts were indicated by cryptic symbols and devices (popular in the 15th and 16th centuries)

Other synonyms of enigmatic canon include enigmatical canon, riddle canon.

enigmatic canon (noun)	enigma canon (noun)
a canon in which the entrances of successive parts were indicated by cryptic symbols and devices (popular in the 15th and 16th centuries)	a canon in which the entrances of successive parts were indicated by cryptic symbols and devices (popular in the 15th and 16th centuries)