for working definitions we use the following:

Practitioner’s research or practioner’s enquiry is research conducted by professionals, in which on a systematic way and in interaction with the professional context answers are found for questions that arise in the professonal field, with a focus on improving professional practice.
(Dutch translation: Praktijkonderzoek is onderzoek dat wordt uitgevoerd door professionals, waarbij op systematische wijze in interactie met de omgeving antwoorden verkregen worden op vragen die ontstaan in de eigen beroepspraktijk, gericht op verbetering van deze praktijk (Van der Donk & Van Lanen, 2019, 2020).)
Action research is systematic inquiry done by teachers, or other individuals, in an educational setting to gather information about, and subsequently improve, the ways their particular educational setting operates, how they teach, and how well their students learn. (Mills, 2000)