you are totally wrong the synonyms or terms of Kshatriya and Andhra Kshatriya was and is used for only Rajus but not other castes of Andhra Pradesh acording to Anthropological Survey of India by Kumar Suresh Singh which can be seen above and also in his other booksBecause Rajus are kshatriyas and also called as Rachavaru in telugu in Medeival PeriodThats why Krishna Rao used the word Rachavaru and also he is not an ordinary manBVKrishna Rao belongs to Andhra Historical Research societyAccording to Kumar Suresh Singh they are Kshatriyas who migrated from north india but not locals which is also supported by other anthropologers as the truth  is Aryans initially entered into Indian  Subcontinent and stayed in north india  northeast and then their castes ie BrahminsKshatriyas  Vaishyas gradully migrated and settled to south india    No