اِرْتَكَزَ على: اِسْتَنَدَ إلَى to lean on, abut on, rest on; to base on, found on, ground on; to be based on, founded on; to rely on, depend on, count on, draw upon; to use, employ

اِرْتَكَزَ: اِسْتَقَر، ثَبَتَ ـ اُنْظُرْ: تَرَكّزَ