onward motion vs procession

onward motion and procession both are nouns.

Word	Noun	Adjective	Verb	Adverb
onward motion	Yes	No	No	No
procession	Yes	No	No	No

As nouns, onward motion and procession are synonyms defined as:

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

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

onward motion (noun)	procession (noun)
the act of moving forward (as toward a goal)	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)
	(theology) the origination of the Holy Spirit at Pentecost