守衛 angolul

defend [defended, defending, defends]▼(ward off attacks against)
verb
[UK: dɪ.ˈfend] [US: də.ˈfend]

guard [guarded, guarding, guards]▼(to protect from some offence)
verb
[UK: ɡɑːd] [US: ˈɡɑːrd]