As used in subsection (c) of § 19a-14 and sections 20-102aa to 20-102ff, inclusive: (1) “Commissioner” means the Commissioner of Public Health; (2) “nurse’s aide” means an individual providing nursing or nursing-related services to residents in a chronic and convalescent nursing home or rest home with nursing supervision, but does not include an individual who is a health professional otherwise licensed or certified by the Department of Public Health, or who volunteers to provide such services without monetary compensation; (3) “registration” means a document issued by the Department of Public Health to a nurse’s aide which certifies that such aide has satisfied the training and competency evaluation requirements prescribed by the commissioner and has been found qualified for employment in a chronic and convalescent nursing home or rest home with nursing supervision; and (4) “registered nurse’s aide” means an individual who has been issued a registration as defined in this section.