Plural of congruence: instances of agreement, harmony, or mathematical equality between figures or numbers.
From congruent + -ence (quality of being). In mathematics, congruence refers to figures being identical in shape and size; in general use, it means agreement.
In mathematics, 'congruence' is so important that mathematicians developed 'modular congruence' (the ≡ symbol), which powers encryption that protects your credit cards.
Complete word intelligence in one call. Free tier — 50 lookups/day.