high
巍 centers on towering height: something lofty, imposing, or grandly elevated.
巍 combines 嵬 (tall mountain) with 委, which likely contributes a phonetic element. The overall structure suggests a towering, majestic height.
A towering mountain 嵬 with a commanding presence 委 inside: 巍 is a peak so high it dominates the landscape.
For ギ, imagine a towering mountain so high it scrapes the sky, and a climber at the top says 'Gee!' in awe: Gee -> ギ.