联络 (lián luò) means 'to get in touch with' or 'to stay in contact', often implying ongoing communication or liaison. It is more formal and specific to maintaining connections than 联系 (lián xì), which is broader and can also mean 'to link' or 'to relate' (ideas/things). Use 联络 for sustained contact (e.g., keeping in touch after moving) and 联系 for general contacting or connecting.