common people is a noun meaning "people in general (often used in the plural)". It carries one recorded sense.
people in general (often used in the plural)
“they're just country folk”
“folks around here drink moonshine”
“the common people determine the group character and preserve its customs from one generation to the next”
Definitions, synonyms and semantic relations for common people come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.