Synonyms:
specialize, specialise, narrow, narrow_down
Meaning: become more focus on an area of activity or field of study; "She specializes in Near Eastern history"
Synonyms:
specify, particularize, particularise, specialize, specialise
Meaning: be specific about; "Could you please specify your criticism of my paper?"
Synonyms:
specialize, specialise
Meaning: suit to a special purpose; "specialize one's research"; "this kind of beak has become specialized in certain Galapagos finches"