1. (noun) a personal or social separation (as between opposing factions)

• breach
• break
• falling out
• rupture
• severance

1. (noun) a gap between cloud masses

• gap
• opening

2. (noun) a narrow fissure in rock

• cleft
• crack
• crevice
• fissure
• scissure

3. (noun) a personal or social separation (as between opposing factions)

• breakup
• detachment
• separation

1. (noun) a personal or social separation (as between opposing factions)

• schism

1. (noun) a personal or social separation (as between opposing factions)

• break
• break up
• part
• separate
• split
• split up
• break up
• sever