It means approval, sympathy and readiness to help Heidegger once delivered a famous lecture called what is metaphysics. after he finished and a baffled silence a student raised his hand And this last instance which is connected with foreign politics.
Eunoia - Dreamsphere Wiki
The two terms are very distinct from each other
Common sense even common sense has two distinct meanings
Sensus communis [t]he common sense (sensus communis, κοινὴ αἴσθησις) apprehends the things sensed by all the proper senses. (summa contra gentiles ii cap For example, when one sees and hears a person singing, his common sense unifies the visual and auditory.
