The biggest difference apart from the lens is the combined lever wind/shutter cocking on the Rolleiflex and the non-interlinked knob wind and combination shutter wind/release lever on the Rolleicord (I hate this lever, others seem to be able to live with it). Next would be the presence of a meter, definitely none on the 'cord, maybe on on the 'flex depending on model. A removable hood may not be an issue these days, the Rollei pentaprism is very rare now and the Rollemeter rangefinder attachment exceedingly rare. The price for the 'cord is quite high but the condition looks very good.
Regards,
David
PS: The Rolleicord seems to be a model V, made 1954 to 1957.