inception vs emanation

inception and emanation both are nouns.

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

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

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

Other hyponyms of inception include germination, cause, overture, preliminary, prelude, procession, rise.

inception (noun)	emanation (noun)
an event that is a beginning; a first part or stage of subsequent events	the act of emitting; causing to flow forth
	(theology) the origination of the Holy Spirit at Pentecost
	something that is emitted or radiated (as a gas or an odor or a light, etc.)