Separation
Part of speech: noun
Definition: The act of separating or the condition of being separated The place at which a division occurs An interval, gap or space that separates things An agreement terminating a relationship between husband and wife, but short of a divorce
Example sentence: And ever has it been known that love knows not its own depth until the hour of separation.
Breakup
Part of speech: noun
Definition: The act of breaking up; disintegration or divisionThe termination of a sexual relationshipA loss of emotional control; a breakdown
Example sentence: Of emotions, of love, of breakup, of love and hate and death and dying, mama, apple pie, and the whole thing. It covers a lot of territory, country music does.