1) General subject: brainchild, brainstorm, concept, idea, ideo, message (книги и т. п.), notion, sacred cow, insight
2) Philosophy: archetype, intention, presentation
3) Rare: intellection
4) Mathematics: conception
5) Diplomatic term: cause
7) Jargon: flash, ripe
8) Advertising: thought
9) Patents: teaching (изобретения), (изобретения) teaching of the patent
10) Aviation medicine: apprehension
11) Psychoanalysis: species
13) Microsoft: lead, sales lead
Универсальный русско-английский словарь. Академик.ру. 2011.