correspondence
nounUK /ˌkɒr.ɪˈspɒn.dəns/
US /ˌkɔːr.əˈspɑːn.dəns/
Letters or messages that people send to each other.
She kept all the correspondence from her pen pal in a special box.
SYNONYMS
OTHER MEANINGS
2. A close similarity or match between two things.
There is a clear correspondence between the two maps.
3. The act of writing and receiving letters.
They kept up a correspondence for over twenty years.
4. A connection or relationship between two sets of things.
Scientists found a correspondence between temperature and ice melting.