What is the meaning of spotting?

noun

• The act of spotting or staining something.
  • synonyms: staining, maculation
• The act of detecting something; catching sight of something.
  • synonyms: detection, catching, espial, spying

verb

• Catch sight of.
  • synonyms: descry, spot, espy, spy
• Detect with the senses.
  • usage: "The fleeing convicts were picked out of the darkness by the watchful prison guards"; "I can't make out the faces in this photograph"
  • synonyms: spot, recognize, recognise, distinguish, discern, pick out, make out, tell apart
• Mar or impair with a flaw.
  • usage: "her face was blemished"
  • synonyms: blemish, spot
• Make a spot or mark onto.
  • usage: "The wine spotted the tablecloth"
  • synonyms: spot, fleck, blob, blot
• Become spotted.
  • usage: "This dress spots quickly"
  • synonyms: spot
• Mark with a spot or spots so as to allow easy recognition.
  • usage: "spot the areas that one should clearly identify"
  • synonyms: spot