Thematic Analysis
Thematic analysis aims to identify the essential topics or themes forming the data. You can consider themes as topics which recur in data in one form or another. Thematic analysis proceeds from identifying and categorizing the themes to enable you to carry out a closer and more detailed exploration.
Read more on thematic analysis from the link below:
Aronson, Jodi. A Pragmatic View of Thematic Analysis. The Qualitative Report, 2:1, 1994.