周 (Kanji for circumference)

Although　周 is pronounced SHUU, it's STRONG for CHOU. Arg.

Onyomi

SHUU

When I put my SHOE in my mouth, I inadvertently got some earth on the circumference of my goatee.

まわ*り	around here. All around me. All around it.(the emphasis is on 360 degrees - all around the circumference or perimeter of someone or something) ★★★☆☆

一周(いっしゅう) する

one time around ★★★☆☆
一 (one) + 周 (circumference) = 一周 (one time around)

one time around (the lake, the trail , etc.)

周囲(しゅうい)

perimeter ★☆☆☆☆
周 (circumference) + 囲 (surround) = 周囲 (perimeter)

perimeter, circumference

XXX 周年(しゅうねん)

XXX-year anniversary ★☆☆☆☆ COUNTER
周 (circumference) + 年 (year) = 周年 (XXX-year anniversary)