- rift - a gap between cloud masses; "the sun shone through a rift in the clouds"
--1 is a kind of opening, gap
- rift - a narrow fissure in rock
--2 is a kind of crack, cleft, crevice, fissure, scissure
- rupture, breach, break, severance, rift, falling out - a personal or social separation (as between opposing factions); "they hoped to avoid a break in relations"
--3 is a kind of separation, breakup, detachment
- rift - a narrow fissure in rock