As nouns the difference between terms and canoness
is that terms is while canoness is (dated) a woman who holds a canonry in a conventual chapter.
terms
English
Noun
(head)
Statistics
*
----
canoness
English
Noun
(es)
(dated) A woman who holds a canonry in a conventual chapter.
Usage notes
A
regular canoness'' was bound by the vow of poverty, and observed a strict rule of life. A ''secular canoness was allowed to hold private property and bound only by vows of chastity and obedience so long as she chose to remain in the chapter.
(
Webster 1913)