校

• Verb: To compare texts, archives, or decrees to establish accuracy or identify discrepancies (collation/proofreading); to check a measurement or object against a known standard (verification).
• Noun (Military): A field officer; by extension, the military unit under that officer's command or the camp.
• Noun (Educational): A school or academy.

• Transitivity: When used as a verb, it is almost exclusively transitive.
• Noun Versatility: The noun may refer to a person (officer), a physical location (school/camp), or an abstract entity (a school of thought).

Contrast with 較: both glyphs involve comparison, but 校 is used for the sake of accuracy (correction and verification), whereas 較 is used for the sake of contrast (relative difference or degree).

The glyph operates under two primary readings that generally divide its semantic field:

• xiào: Associated with military rank and comparison/correction.
• jiào: Associated with education and institutional schooling.