verb (v)

• devote oneself to a special area of work(verb.social)

  Synonym:
  specialize
  

  source: wordnet30
• be specific about(verb.communication)

  Synonym:
  particularise, particularize, specialize, specify
  Antonym:
  generalise, generalize
  

  source: wordnet30
• suit to a special purpose(verb.change)

  source: wordnet30
• become more focus on an area of activity or field of study(verb.change)

  Synonym:
  narrow, narrow down, specialize
  Antonym:
  branch out, broaden, diversify
  

  source: wordnet30
• evolve so as to lead to a new species or develop in a way most suited to the environment(verb.change)

  Synonym:
  differentiate, specialize, speciate
  

  source: wordnet30