procession vs parade

procession and parade both are nouns.

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

As nouns, parade is a hyponym of procession; that is, parade 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
parade: a ceremonial procession including people marching

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

procession (noun)	parade (noun)
the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation	a visible display
the act of moving forward (as toward a goal)	a ceremonial procession including people marching
(theology) the origination of the Holy Spirit at Pentecost	an extended (often showy) succession of persons or things

procession (verb)	parade (verb)
	march in a procession in a public place
	walk ostentatiously