What is the meaning of manifestation?

noun

• A clear appearance.
  • usage: "a manifestation of great emotion"
• A manifest indication of the existence or presence or nature of some person or thing.
  • usage: "a manifestation of disease"
• An appearance in bodily form (as of a disembodied spirit.
  • synonyms: materialization, materialisation
• Expression without words.
  • usage: "tears are an expression of grief"; "the pulse is a reflection of the heart's condition"
  • synonyms: expression, reflection, reflexion
• A public display of group feelings (usually of a political nature. )
  • usage: "there were violent demonstrations against the war"
  • synonyms: demonstration