call back vs recollect

call back and recollect both are verbs.

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

As verbs, call back and recollect are synonyms defined as:

call back and recollect: recall knowledge from memory; have a recollection

Other synonyms of call back include call up, recall, remember, retrieve, think.

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