From boulomai; volition, i.e. (objectively) advice, or (by implication) purpose -- + advise, counsel, will.
see GREEK boulomai
βουλὰς (boulas) − 1 Occurrence
βουλῇ (boulē) − 6 Occurrences
βουλὴν (boulēn) − 4 Occurrences
βουλῆς (boulēs) − 1 Occurrence