digression vs diversion

digression and diversion both are nouns.

Word	Noun	Adjective	Verb	Adverb
digression	Yes	No	No	No
diversion	Yes	No	No	No

As nouns, digression and diversion are synonyms defined as:

digression and diversion: a turning aside (of your course or attention or concern)

Other synonyms of digression include deflection, deflexion, deviation, divagation.

digression (noun)	diversion (noun)
a turning aside (of your course or attention or concern)	an activity that diverts or amuses or stimulates
wandering from the main path of a journey	a turning aside (of your course or attention or concern)
a message that departs from the main subject	an attack calculated to draw enemy defense away from the point of the principal attack