WordNet sense 1 (a request by the manufacturer of a defective product to return the product (as for replacement or repair)):

callback

WordNet sense 2 (the process of remembering (especially the process of recovering information by mental effort)):

recollection, reminiscence

WordNet sense 3 (call to mind):

echo

WordNet sense 4 (cause to be returned):

withdraw, call back, call in

WordNet sense 5 (go back to something earlier):

return, come back, hark back

WordNet sense 6 (recall knowledge from memory; have a recollection):

recollect, remember, retrieve, think, recollect, call up