HSK 3.0 11000 CHINESE WORDS
ENGLISH 6000 THEME WORDS
OXFORD 5000 CORE WORDS
TANAKA 6000 CORE WORDS
đi bộ không 
to spacewalk
đi bộ ngoài không gian to spacewalk
[ đi ] : to go; (particle used to form commands, suggestions)
[ bộ ] : (1) section, part department, ministry; (2) gear, part, device; (3) radical (of a Chinese character); (4) collection, set, pack (cards), suit (clothes); (5) appearance, mean, behavior, bearing; (6) step, pace; (7) [CL for laws]; (8) land; (9) foot; (10) register, account book
[ ngoài ] : besides, outside, aside from, in addition; without, exterior, external; up north (referring to the northern part of VN)
[ không ] : (1) no, not; (question tag); (2) air; (3) empty
[ gian ] : (1) dishonest, underhanded, tricky; (2) apartment, room; (3) difficult, hard; (4) danger, peril
đi bộ không to spacewalk đi bộ ngoài không gian to spacewalk [ bộ ] : (1) section, part department, ministry; (2) gear, part, device; (3) radical (of a Chinese character); (4) collection, set, pack (cards), suit (clothes); (5) appearance, mean, behavior, bearing; (6) step, pace; (7) [CL for laws]; (8) land; (9) foot; (10) register, account book
[ ngoài ] : besides, outside, aside from, in addition; without, exterior, external; up north (referring to the northern part of VN)
[ không ] : (1) no, not; (question tag); (2) air; (3) empty
[ gian ] : (1) dishonest, underhanded, tricky; (2) apartment, room; (3) difficult, hard; (4) danger, peril