Oh, also, in my mind swinging implies that generally you're open to having sexual contact with relative strangers, whereas polyfuckery could occur exclusively with people you know well.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.