commoner, all, bastard
庶 centers on the idea of the common or ordinary multitude, as opposed to the elite or legitimate. The meanings 'commoner' and 'all' reflect this broad, inclusive sense, while 'bastard' is a specific historical application referring to a child born outside of the main line, i.e., not of the primary wife.
庶 originally combined 广 (a building) with a component representing a fire or cooking, suggesting a kitchen or common area where servants or commoners worked. Over time it came to mean 'commoner' or 'all'. The 'bastard' sense is a later extension from the idea of a child of a concubine, i.e., not of the main household.
Under the roof 广, a fire 灬 burns in a common kitchen where all the commoners gather. This is the place for the ordinary multitude, not the elite.
For ショ, imagine a commoner showing off a new tool in the kitchen: 'Show!' -> ショ, and all the other commoners gather around to see.
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common people; ordinary people; masses
illegitimate child
general affairs
ordinary people; common folk; general masses; man in the street; populace at large
common people
samurai and commoners
commoner; common people
illegitimate birth
general affairs section
desire; hope
political affairs; all phases of government
drama of ordinary people
commonness; the common touch
sensibilities of the common people; ordinary people's way of thinking; popular sentiment
popular; folksy; plebeian; ordinary; unpretentious
people's bank
loans for low-income people
pawnshop
House of Commons (UK, Canada)
illegitimate family lineage