activation vs beginning

activation and beginning both are nouns.

Word	Noun	Adjective	Verb	Adverb
activation	Yes	No	No	No
beginning	Yes	Yes	No	No

As nouns, beginning is a hypernym of activation; that is, beginning is a word with a broader meaning than activation:

Other hypernyms of activation include commencement, start.

activation (noun)	beginning (noun)
the activity of causing to have energy and be active	the act of starting something
making active and effective (as a bomb)	the first part or section of something
stimulation of activity in an organism or chemical	the event consisting of the start of something
	the place where something begins, where it springs into being
	the time at which something is supposed to begin

activation (adjective)	beginning (adjective)
	serving to begin