noun

• Mutual communication or discourse:
• (uncountable, obsolete) Friendly discussion.
• (uncountable) Reciprocal exchange of civilities, especially conversation between persons by means of letters.
• (uncountable) Newspaper or news stories.
• (countable or uncountable) Postal or other written communications.
• Congruity or similarity between different things, people, etc:
• (countable) An agreement of situations or objects with an expected outcome.
• (set theory, countable) A relation.
• (theology, Swedenborgianism) A similarity between physical and spiritual things (e.g. light to wisdom, or warmth to love)