Wonderfully moderated by Elin Arfon, our second roundtable (8.12.2022) looked at the conceptual frameworks and theories of our research. It was great to hear from different people in different fields and compare perspectives and definitions of various concepts. We discussed the difference between a theory and a concept, we looked at some epistemological and ontological underpinnings of our theories, thought about what we mean by teacher development, pondered into conceptualizing plurilingualism, multilingualism and translanguaging and shared many valuable resources. We agreed on discussing more on theory next week during the final LANGSCAPE and ENROPE colloquium this year.