dealings or communication between individuals, groups, countries, etc.

interchange of thoughts, feelings, etc.

sexual relations or a sexual coupling, esp. coitus.

noun

miscommunication

noun

carnal knowledge , coition , coitus , copulation , fornication , intimacy , love-making , relations , sex , sexual relations , association , commerce , communion , connection , contact , converse , correspondence , dealings , give-and-take , interchange , intercommunication , mesh , networking , team play , teamwork , trade , traffic , transactions , business , communication , conversation