说文解字注

• 言(speech; words)RADICAL
• 兌(exchange; joyful)PHONETIC

Speaking is using words to exchange with each other.

• 文(pattern on chest; breast decoration)ASSOCIATIVE

The character depicts body tattoos or patterns on the chest, symbolizing writing and culture.

• 角(horn (animal))RADICAL
• 刀(blade; knife edge)ASSOCIATIVE
• 牛(cow; cattle)ASSOCIATIVE

Use a knife to separate horns from an ox — that's the meaning of "resolve" (to take apart, to decompose).

• 宀(roof)RADICAL
• 子(child)ASSOCIATIVE

A child born under a roof and learning to speak gives rise to written characters.

• 氵(water; liquid)RADICAL
• 主(master; center)PHONO-SEMANTIC

Water concentrated at one central point is the meaning of the character 注.