inequivalence.

A lack of equal value, meaning, or effect between things being compared.

Use it for

Words that belong together

• semantic inequivalence
• inequivalence between measures

On the page

The analysis identifies an inequivalence between the two supposedly interchangeable measures.

Usage notes

Primary category: academic / formal. Forms: usually uncountable; countable singular inequivalence, plural inequivalences for distinct mismatches. Writing functions: comparison, contrast, analysis. Commonness: uncommon. Established English; no emotional intensity assigned.