procession vs progression

procession and progression both are nouns.

Word	Noun	Adjective	Verb	Adverb
procession	Yes	No	No	No
progression	Yes	No	No	No

As nouns, procession and progression are synonyms defined as:

procession and progression: the act of moving forward (as toward a goal)

Other synonyms of procession include advance, advancement, forward motion, onward motion, progress.

procession (noun)	progression (noun)
the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation	the act of moving forward (as toward a goal)
the act of moving forward (as toward a goal)	a movement forward
(theology) the origination of the Holy Spirit at Pentecost	a series with a definite pattern of advance