考古学

• 耂(old person; aged person)RADICAL
• 丂(background sound; curved object)PHONETIC

An elderly person bending their back like a curved object represents the image of long years of examination.

• 十(ten)ASSOCIATIVE
• 口(mouth; speech)RADICAL

Ten mouths passing word down through generations—that is something ancient.

• ⺍(two hands (indicating learning))ASSOCIATIVE
• 冖(roof; house)ASSOCIATIVE
• 子(child)RADICAL

A child sitting under a roof with two hands diligently studying represents learning.