11 Old HSK word(s): ☊周 ** A ☊周围 ** A ☊周到 ** B ☊周末 ** C ☊周年 ** C ☊四周 ** C ☊众所周知 ** D ☊周密 ** D ☊周期 ** D ☊周折 ** D ☊周转 ** D
不周* * 上周* * 下周* * 圆周* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

圆 circle / round, circular / complete
周 Zhou dynasty / circumference

Hsk Characters: 周 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
周 5468 + 周 + + Zhou dynasty / circumference 口 周 Mouth 周 (UMKREIS) zhou1 +

Korean:

週 + 周 돌주(돌다: to circulate, go in a circle, turn around in a circle)
周 + 周 두루 주 (두루: all over, all around, universally)
10 NHSK word(s): 周末* 3 zhou1 mo4weekend 周围* 4 zhou1 wei2surroundings/ environment/ to encompass 周到* 5 zhou1 dao5thoughtful/ considerate/ attentive/ thorough 众所周知* 6 zhong4 suo3 zhou1 zhi1as everyone knows (idiom) 周边* 6 zhou1 bian1periphery/ rim 周密* 6 zhou1 mi4careful/ thorough 周年* 6 zhou1 nian2anniversary/ annual 周期* 6 zhou1 qi1period/ cycle 周折* 6 zhou1 zhe2complication/ twists and turns/ problem/ setback 周转* 6 zhou1 zhuan3turnover (in cash or personnel)/ to have enough resources to cover a need
KOREAN6000 word(s):
2 KOREAN 2500 New HSK words):
周到 + zhōudào 세심하다. 치밀하다. 꼼꼼하다. 빈틈없다. sesimhada. chimilhada. kkomkkomhada. binteum-eobsda.
周围 + zhōuwéi 주위. 주변. juwi. jubyeon.
5 KOREAN Sentence(s):
周 / 星期 / 礼拜 + 일주일 il-juil
从周一到周日 / 从星期一到星期天 + 월요일부터 일요일까지 wolyoilbu-teo ilyoil-kkaji
这个周末你已经有什么计划了吗? + 이번 주말에 벌써 계획이 있어요? ibeon juma-re beol-sseo kyehwehgi isseoyo?
我建议, 我们这个周末见面。 + 이번 주말에 만났으면 해요. ibeon juma-re mannasseumyeon haeyo.
不，要等到周末。 + 아니요, 주말에만 가요. aniyo, juma-reman gayo.