procession vs recession

procession and recession both are nouns.

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

As nouns, recession is a hyponym of procession; that is, recession is a word with a more specific, narrower meaning than procession:

procession: the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation
recession: the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service

Other hyponyms of procession include convoy, caravan, train, wagon train, cavalcade, march, motorcade, parade, cortege, recessional.

procession (noun)	recession (noun)
the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation	the act of becoming more distant
the act of moving forward (as toward a goal)	the act of ceding back
(theology) the origination of the Holy Spirit at Pentecost	the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service
	a small concavity
	the state of the economy declines; a widespread decline in the GDP and employment and trade lasting from six months to a year