(ひらく) (v5k,vt) (1) to open (e.g. a bank-account, festival, etc.); (v5k,vi) (2) to spread out; to open up (flower bud, umbrella, etc.); to widen (gap, distance, width); (3) to hold; to give (party, conference, etc.); (P) [EDICT]
(あく) (v5k,vi) (1) (esp. 開く) to open (e.g. doors); (2) (esp. 開く) to open (e.g. business, etc.); (3) (esp. 空く) to be empty; (4) (esp. 空く) to be vacant; to be available; to be free; (5) (esp. 明く) to be open (e.g. neckline, etc.); (6) (esp. 明く) to have been opened (of one's eyes, mouth, etc.); (7) (esp. 明く) to come to an end; (v5k,vt) (8) (esp. 明く) to open (one's eyes, mouth, etc.); (v5k,vi) (9) (See 穴が開く) to have a hole; to form a gap; to have an interval (between events); (P) [EDICT]