同位素

• 凡(frame; everything)ASSOCIATIVE
• 口(mouth; speech)RADICAL

Everyone's mouth speaking the same word means agreement.

• 亻(person; people)RADICAL
• 立(stand upright; stand straight)PHONO-SEMANTIC

A person's position is determined by where they stand.

• 糸(silk thread; filament)RADICAL
• 龶(coarse undyed thread bundle; top part of thread)ASSOCIATIVE

Raw silk that hasn't been dyed suggests the meaning of pure, simple, and basic.