Why this word is great
BILOQUISM — [Noun] The ability to speak in two distinct voices, particularly as a ventriloquist. Coined by American novelist Charles Brockden Brown (1771–1810), likely from Latin bi- ("two") + loqui ("to speak"), with the suffix -ism denoting a practice or skill. Unlike "ventriloquism" (which disguises the source of a single voice) or "polyglossia" (which denotes multilingual fluency), biloquism is the uncanny doubling of self—a single throat yielding two timbres, two personalities. It is the puppet’s wooden jaw clacking in counterpoint to its master’s murmur, the actor slipping between hero and villain without changing costume, or the eerie echo of a man arguing with himself in an empty room—proof that identity is as much performance as essence.