different between malevolence vs malignity

English

From Middle French malevolence, from Latin malevolentia (“malevolence”), derived from malevol?ns (“malevolent”).

malevolence (countable and uncountable, plural malevolences)

Hostile attitude or feeling.
to show someone malevolence
He said it with malevolence.
Behavior exhibiting a hostile attitude.

From Middle French maligneté, from Latin malignitas.

malignity (countable and uncountable, plural malignities)

The quality of being malign or malignant; badness, evilness, monstrosity, depravity, maliciousness.
- 1861, Charles Dickens, Great Expectations, Chapter 40:
  His enjoyment of the spectacle I furnished, as he sat with his arms folded on the table, shaking his head at me and hugging himself, had a malignity in it that made me tremble.
A non-benign cancer; a malignancy.
- 2005, Jun;106(3):177-80 English abstract of French article "Multiple metastases of a mandibular ameloblastoma" R.L. Abada et al., "Multiple metastases of a mandibular ameloblastoma", Revue de stomatologie et de chirurgie maxillo-faciale
  The absence of any histological sign of malignity in the primary tumor and in the metastases, as observed in our patient, is remarkable.

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