¿Cuál es la diferencia entre 에 y 네 ?Puedes dar oraciones como ejemplo.

네 is informal (but still formal) or polite used to strangers(someone you don't know), olders, seniors, teacher, boss, lover
(low formality / high politeness)

예 is more formal (polite) used to elders, seniors, boss, army, officers
(high formality / high politeness)

응, 어, 뭐? is informal or casual used to the same age(friend), someone younger than you, the children, lover, wife & husband
(low formality / low politeness)

Non-questioned:
1. Okay
2. Alright
3. Yes(when you answer a question)

Questioned:
1. Pardon?
2. I'm sorry?
3. Yes? (when someone called you)


We(Koreans) usually use "네" than "예" even 예 is using for boss, army, officers & more formal/polite than 네.