Entry level credentials, the AAPC has the CPCA for apprentice and AHIMA has the CCA. Cost of the exam: AAPC charges $300 and you must be a member. AHIMA charges $299 for members, $399 for non-members so pretty much they are the same. What is different is that the number of exam attempts per fee.
The process of allowing root access on a phone and/or other device. The term rooting is most often associated with Android devices. It's often thought of as the Android equivalent of iOS Jailbreaking.
grass roots - the common people at a local level (as distinguished from the centers of political activity) plural, plural form - the form of a word that is used to denote more than one