motorcade vs procession

motorcade and procession both are nouns.

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

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

motorcade: a procession of people traveling in motor cars
procession: the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation

motorcade (noun)	procession (noun)
a procession of people traveling in motor cars	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