Open English Wordnet
Nouns
(n)manifestationa manifest indication of the existence or presence or nature of some person or thing“a manifestation of disease”
(n)materialization, materialisation, manifestationan appearance in bodily form (as of a disembodied spirit)
(n)expression, manifestation, reflection, reflexionexpression without words“tears are an expression of grief”, “the pulse is a reflection of the heart's condition”
(n)demonstration, manifestationa public display of group feelings (usually of a political nature)“there were violent demonstrations against the war”