Wat is the difference between fear and respect??

I have to know bcuz it real bothers me lately i do not tell if someone has fear or respect for me

like i when i walk down tha streets or see you @ LAN and you nod your head at me is that cuz i feared you? or you respect me ? =]<o~~~~

one must know so please enlighten me =]

*hits tha blunt*
peace (Y)