noun (n)

• a movement downward(noun.event)

  Synonym:
  fall
  

  source: wordnet30
• properties attributable to your ancestry(noun.attribute)

  Synonym:
  extraction, origin
  

  source: wordnet30
• the act of changing your location in a downward direction(noun.act)

  source: wordnet30
• the kinship relation between an individual and the individual's progenitors(noun.linkdef)

  Synonym:
  filiation, line of descent, lineage
  

  source: wordnet30
• a downward slope or bend(noun.object)

  Synonym:
  declension, declination, decline, declivity, downslope, fall
  Antonym:
  acclivity, ascent, climb, raise, rise, upgrade
  

  source: wordnet30
• the descendants of one individual(noun.group)

  Synonym:
  ancestry, blood, blood line, bloodline, line, line of descent, lineage, origin, parentage, pedigree, stemma, stock
  

  source: wordnet30
• The act of descending, or passing downward; change of place from higher to lower.(noun)

  source: webster1913