A part
西
Shown as a part of 2 words so far, read 2 ways.
さい 1 word
- 関西かんさいsouth-western half of Japan, including Osaka
関西 · here “west”
ざい 1 word
- 東西とうざいEast and West, whole country
東西 · here “west” (from さい)
Also written with 西
These words contain the character in their spelling but show no breakdown that names it, so nothing is claimed about its role in them.