alliance (alliances plural )
1 n-count An alliance is a group of countries or political parties that are formally united and working together because they have similar aims.
(=coalition)
The two parties were still too much apart to form an alliance.
2 n-count An alliance is a relationship in which two countries, political parties, or organizations work together for some purpose.
oft N with/between n, also in N with n
(=partnership)
What will be the effect of the alliance between IBM and Apple?...