会 · 6 strokes
Simplified form of 會. Phonosemantic compound. 合 represents the meaning and 𡆧 represents the sound.
社 · 7 strokes
Originally depicted a god (礻) of the soil (土). The meaning later shifted to "shrine", "congregation", and "society".
員 · 10 strokes
Depicts the round opening (口) of a cooking pot (鼎). Based on the original meaning "round", now written as 圓. The current meaning is a phonetic loan.