loud talking
娚 centers on loud talking, likely in a social or conversational context. The given meaning is narrow, so treat it as a specific action rather than a broad conceptual cluster.
娚 combines 女 (woman) and 男 (man). The exact historical origin is uncertain, but it likely relates to the idea of a woman and man talking loudly together.
A woman 女 and a man 男 are having a loud conversation. Their voices carry, so 娚 means loud talking.
For ナン, picture a man 男 (なん) and a woman talking loudly: the man's reading ナン cues the kanji's reading while they argue noisily.