The word "party" evokes division or separation, whereas "alliance" evokes a coming together. According to the Online Etymology Dictionary, the origins of "party" are:
"late 13c., "part, portion, side," from O.Fr. partie "a part, a party" (12c.), lit. "that which is divided," from fem. pp. of partir "to divide" (see part (v.)). Political sense of "side in a contest or dispute" evolved by 1300."As for "alliance":
"c.1300, "bond of marriage" (between ruling houses or noble families), from O.Fr. aliance (12c., Mod.Fr. alliance) "alliance, bond; marriage, union," from aliier (Mod.Fr. allier) "combine, unite" (see ally)."Such an alliance would recognize that we are all connected and interdependent, not separate and adversarial. It would find common ground among and welcome all, taking inspiration from Edwin Markham's poem "Outwitted":
He drew a circle that shut me out --Just a dream, you say? Well:
Heretic, rebel, a thing to flout.
But love and I had the wit to win:
We drew a circle that took him in!
To accomplish great things, we must dream as well as act.The platform of such an alliance would value and give top priority to the common good. Specifically, what might that dreamy platform look like? Stay tuned.
You see things; and you say, 'Why?' But I dream things that never were; and I say, "Why not?"
--George Bernard Shaw