Also bear in mind that the language is still evolving, right along with people's understanding of it.
My personal take:
Looking at the word bits...
Word front bits:
poly- (more than a pair, "many")
mono- (one, as in a pair where each person has one partner)
a- (none, not, no thanks)
bi- (binary, in this case male/female)
hetero- (different from, opposite)
homo- (same as)
pan- (any, all, in this case, no discrimination based upon gender)
demi- (used to denote attraction only to one for whom you've got an emotional bond)
sapio- (intellect, as in attraction to intelligence)
mis- (hatred or dislike, bias against)
Word back bits:
-sexual (to denote sexual preference)
-amorous (to describe love habits)
-gymy (related to marriage, pairing, partnering "officially"...?)
-gyny (as relates to women in a relationship structure)
-andry (as relates to men in a relationship structure)
-platonic (relating as friends)
-romantic (relating to love/romance...not necessarily sex)
-phile (used to indicate a focused love or fetishization of the subject, which tends to be the word prefix)
Anyone got more? I'd love to see more! I like playing with word bits.
Now some of these word bits are more commonly used with particular other word bits, but I can see us reaching a point where they get tacked together as needed by anyone who sees fit to do so.
So. Polygamy. Indicates or implies that marriage is involved. Or at least a more formalized and family style of poly relating, and often affiliated with the religious practice. OK.
Polyamory is understandably at least in part an effort to differentiate from that, as well as being a far more flexible and consent-focused (rather than coercive) than polygamy is perceived to generally be.
Hm. I would presently describe myself, in terms of not only what I am doing in life, but what I'm open to doing in the foreseeable future:
Monosexual, possibly monogamous.
Polyamorous
Panplatonic
Biromantic
Sapiophile!
And that would mean that I am sexually exclusive and would consider marriage with one person, but I LOVE many people, will be friends with anyone and everyone, might develop romantic crushes on men or women, and am turned on by intelligence.
Play with it! It's cool, there's no language police. The worst that can happen is a minor argument over semantics on the internet. *shrug*
