spell out vs specialize

spell out and specialize both are verbs.

Word	Noun	Adjective	Verb	Adverb
spell out	No	No	Yes	No
specialize	No	No	Yes	No

As verbs, specialize is a hypernym of spell out; that is, specialize is a word with a broader meaning than spell out:

Other hypernyms of spell out include particularise, particularize, specialise, specify.

spell out (verb)	specialize (verb)
make explicit; specify in detail	become more focused on an area of activity or field of study
orally recite the letters of or give the spelling of	suit to a special purpose
spell fully and without abbreviating	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