What is the meaning of commonplace?

noun

• A trite or obvious remark.
  • synonyms: platitude, cliche, banality, bromide

adjective

• Completely ordinary and unremarkable.
  • usage: "air travel has now become commonplace"; "commonplace everyday activities"
• Not challenging; dull and lacking excitement.
  • usage: "an unglamorous job greasing engines"
  • synonyms: humdrum, prosaic, unglamorous, unglamourous
• Repeated too often; overfamiliar through overuse.
  • usage: "bromidic sermons"; "his remarks were trite and commonplace"; "hackneyed phrases"; "a stock answer"; "repeating threadbare jokes"; "parroting some timeworn axiom"; "the trite metaphor `hard as nails'"
  • synonyms: banal, hackneyed, old-hat, shopworn, stock, threadbare, timeworn, tired, trite, well-worn