Synonyms for Conception (same or very similar meaning)
WordNet sense 1 (the event that occurred at the beginning of something):
creationWordNet sense 2 (an abstract or general idea inferred or derived from specific instances):
concept, construct, constructWordNet sense 3 (the creation of something in the mind):
design, innovation, invention, excogitationFrom the ODE community, based on WordNetadd/edit