noun
rift
RIFT/rɪft/
A deep split separating parts of a whole.
A deep rift in their friendship leaves them sitting apart.

Etymology
Rift has a Scandinavian source, comparable to Old Icelandic ript, “breach,” and originally meant a physical split or tearing. A serious disagreement transfers that image to a relationship divided by a break.
In context
he was the symbol of the rift between North and South during the American Civil War a conflict that marked him forever
More examples
- Wide rifts in the ice make crossing the glacier dangerous.
- Their argument over money creates a rift in the family.
- Party leaders hope to heal the rift between rival factions.
Forms
rift · rifts