what is bodhi/awakening ? how it is related to nibbana? is it a faculty like panna?

(1)I know 4 noble truth very well. then what is missing between me knowing 4 noble truth and an arhant/buddha knowing 4 noble truth. why his knowing is called bodhi? (2)By practice of anicca, dukha and anatta, I am building panna faculty in me. so why panna is not bodhi. and why bodhi is not a spiritual faculty like panna? (3)Is sambodhi and nibbana just one event . and two different way of narrating.? like nibbana is a state devoid of Rag/dos/Moh and knowing 4 noble truth in that state is Bodhi? (4)Does Bodhi comes under category of seeing(as in vipassana, vedana) or comes under knowing( as in sanna,panna,pajanati) (5) How to understand 7 factors of awakening in relation to bodhi? are they sequensial or simultaneous ? do we get bohdi after completing all of them or our bodhi keeps on getting stronger along with these factors getting stronger?