Englishfor English speakers
correspondence
Noun
—
If two people are in correspondence, they are in a friendly discussion.
My brother and I have been in correspondence over what to do for my elderly father.
—
A correspondence is a written communication (such as letters) between different people
My brother sends me a correspondence every day about my father's health.
proving
noun
—
(homeopathy) Experimentation to determine which substances cause which effects when ingested.