Origin: Latin suffix -sion
Digression has 4 different meanings across 1 category:
a message that departs from the main subject
a turning aside (of your course or attention or concern)
"a diversion from the main highway"
"a digression into irrelevant details"
"a deflection from his goal"
wandering from the main path of a journey
An aside, an act of straying from the main subject in speech or writing.