procession vs inception

procession and inception both are nouns.

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

As nouns, inception is a hypernym of procession; that is, inception is a word with a broader meaning than procession:

procession: (theology) the origination of the Holy Spirit at Pentecost
inception: an event that is a beginning; a first part or stage of subsequent events

Other hypernyms of procession include origin, origination.

procession (noun)	inception (noun)
the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation	an event that is a beginning; a first part or stage of subsequent events
the act of moving forward (as toward a goal)
(theology) the origination of the Holy Spirit at Pentecost