to aTTRACT
verb
   to draw physically towards one or by appeal to natural   or excited   interest,   emotion or aesthetic sense   Working for the U.N. doesn't attract me at all.
  This museum attracts many visitors in July.
  attRACted
adj
   pulled towards something : I was attracted to him by his sense of humour.   
  an atTRACtion
noun
   something which is attractive : There was an instant attraction between us.  
  to conTRACT
verb
   1) to get smaller (i.e. "pull itself together" ) : Iron contracts when it is cooled.
  2) to get a disease : He contracted ebola while in The Congo. 
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  a contRACtion
noun
   1) a reduction in size/volume   2) what a female experiences as she is about to give birth
  a CONtract
noun
   a legally-binding document
  conTRACtual
adj
   legally bound: We have a contractual obligation to carry out the work.   
  conTRACted
adj
   ditto
  to deTRACT from
verb
   to take away from, but NOT in a calculation : His scruffy hair detracts from his appearance.   
  a deTRACtor
noun
   a person who says something negative about someone : He's a good man; don't listen to his detractors!   
  to disTRACT
verb
   to disturb the concentration
  disTRACting
adj
   something disturbing your concentration: Mobiles are extremely distracting if you are driving.   
  disTRACted
adj
   not concentrating / having one's attention disturbed
  a disTRACtion
noun
   something diverting your attention: I can't work at home; there are just too many distractions.  
  to exTRACT
verb
   to take a part out of something smaller
  to remove a tooth : Dentists EXTRACT teeth; they don't say "pull out"!   
  an EXtract
noun
   a part of A taken from A for some special purpose:  The guest author read an extract from her new book.  
  an exTRACtion
noun
   having a tooth pulled out: I'm sorry, but you need three more extractions, Mr Snuggs ....   
  inTRACtable
adj
   a (lasting) problem very hard to (re) solve or fix: Bringing up the sunken cruise ship is going to be an intractable task.   
  to reTRACT
verb

  to take back in or withdraw : A plane retracts its undercarriage. Cats can retract their paws.
                                                        He refused to retract his insulting remarks.   
  reTRACtable
adj
   capable of being retracted : A new arena with a retractable roof is planned.   
  to SUBtract
verb
   to take away from, especially maths  
  subTRACtion
noun
   for example: 21-3 = 18 :  In Scrabble you need to subtract your remaining points.
  TRACtion
noun
   1) the action of drawing or pulling something over a surface, especially a road or track
  2) the extent to which a product, idea, etc. gains popularity or acceptance : I don't think your idea will gain traction in Asia.
  3) the application of a sustained pull on a limb or muscle, especially to maintain in position a fractured bone or to correct a   deformity : After his motorbike accident he spent three weeks in hospital in traction.
  a TRACtor
noun
   a motorised vehicle for pulling things on the farm