"Ideogeny" refers to the study of the origin and development of ideas or concepts. Synonyms for this word include "ideation," which specifically refers to the process of creating or forming new ideas, as well as "ideogenesis," which emphasizes the origin of ideas. Other related words could include "conception," which suggests the initial formation of an idea, or "genesis," which refers to the actual beginning or creation of something. Overall, these synonyms all emphasize the importance of understanding how ideas come to be, and the ways in which they develop and change over time.