narrow down vs specialise

narrow down and specialise both are verbs.

Word	Noun	Adjective	Verb	Adverb
narrow down	No	No	Yes	No
specialise	No	No	Yes	No

As verbs, narrow down and specialise are synonyms defined as:

narrow down and specialise: become more focused on an area of activity or field of study

Other synonyms of narrow down include narrow, specialize.

narrow down (verb)	specialise (verb)
become more focused on an area of activity or field of study	become more focused on an area of activity or field of study
define clearly	suit to a special purpose
	evolve so as to lead to a new species or develop in a way most suited to the environment
	be specific about
	devote oneself to a special area of work