Doric order- of the three columns found in greece, doric columns are the simplest​
  they have a capital (top or crown) made up of a circle topped by a square.   area above column is called the freeze. simple to no patterns​
  examples; parthenon and hephaisteion​






Ionic order- taller shaft then doric. makes columns look more slender​
  shafts have flutes(lines carved form top to bottom)​
  shafts have entasis​
  frieze is plain.​
  bases are large and look like stacked rings​
  scroll above shaft.​
  examples; Erechtheum and temple of athena nike​






Corinthian order- most decorative, entasis to make shafts look straight​
  capitals have flowers below small scrolls​
  shafts- flutes and base like ionic​
  cornices are at a slant​
  examples; choragic monument and olympien​






Tuscan order- simplified doric order​
  simple base and capital without adornments. no flutting or lines​
  examples; union station, chicago and frank goodyear mausoleum​





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Composite order- mixed order. volutes(spirals) in ionic and acanthus leaves from    corinthian order​
   volutes are larger.​
   examples; university of virginia and william pratt house