The term ENDINGS FOR PAY AND PLUG can be summarized as two four-letter words: OLAS and NALA. OLAS is an abbreviation for 'Online Automated System, ' which is a type of software used to process payments and manage customer accounts. NALA is an abbreviation for 'Network Access Layer Adapter, ' which is a device used to connect computers to a network. Both of these terms are commonly used in the context of online payments and data transfer.