Familiar use of "correspondence": mail or exchange of papers and ideas; compare input, feedback, dialogue, or texting.
The Romantic term is older but related: a broad state or condition in which one thing agrees with or matches another.
Quick example: Outside it's a lovely day; inside you feel all sunny and bright. Inside matches outside.
You wake up feeling bleak and hopeless; when you see that it's a lovely day, you feel as though the world is mocking you.
1. act or state of corresponding,
relation or agreement of things to each other
or of one thing to another; congruity, harmony, similarity, or analogy;
Second meaning is (or was recently) more common in everyday speech, as in a "correspondence course" where you learn art or other subjects at home while communicating by letter or email with an instructor elsewhere.
But first meaning is important term for an imaginative action or relation.
selected web definitions:
Romantic concept: relation between inner and outer world, soul and nature, self and cosmos
Emerson, Nature: "every hour and change corresponds to and authorizes a different state of the mind"
of Sleepy Hollow": "every
sound of nature, at that witching hour, fluttered [Ichabod's] excited imagination
. . . "
. . . "
or reversed: "all the
stories of ghosts and goblins . . . came crowding upon his recollection. The
night grew darker and darker"
first glimpse of building, insufferable gloom pervaded my spirit" reverse:
"a mind from which darkness . . . poured forth"
first glimpse of building, insufferable gloom pervaded my spirit"
reverse: "a mind from which darkness . . . poured forth"
twinning (cf. "William Wilson")
In Poe's Fall of the House of Usher, Roderick and Madeleine are twins with "sympathies of a scarcely intelligible nature"--that is, their "correspondence" is so near that you can't tell one's feelings or ideas from the other's