decommission vs call back

decommission and call back both are verbs.

Word	Noun	Adjective	Verb	Adverb
decommission	No	No	Yes	No
call back	No	No	Yes	No

As verbs, call back is a hypernym of decommission; that is, call back is a word with a broader meaning than decommission:

Other hypernyms of decommission include call in, recall, withdraw.

decommission (verb)	call back (verb)
withdraw from active service	recall knowledge from memory; have a recollection
	summon to return
	return or repeat a telephone call
	cause to be returned