1) discover - discovery ; "How historically significant is this discovery?".
2) invent - invention; "The invention of scuba gear is accredited to Jacques Cousteau."
3) rotate - rotation ; "The earth make one rotation every 24 hours".
4) conclude - conclusion ; "The facts point us to a certain conclusions".
5) combine - combination; "He has the right combination of talent and experience".
Объяснение: