recognize vs call back

recognize and call back both are verbs.

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

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

Other hypernyms of recognize include call up, recall, recollect, remember, retrieve, think.

recognize (verb)	call back (verb)
perceive to be the same	recall knowledge from memory; have a recollection
be fully aware or cognizant of	summon to return
accept (someone) to be what is claimed or accept his power and authority	return or repeat a telephone call
express obligation, thanks, or gratitude for	cause to be returned
express greetings upon meeting someone
detect with the senses
grant credentials to
show approval or appreciation of
exhibit recognition for (an antigen or a substrate)