gazetteer vs dictionary

gazetteer and dictionary both are nouns.

Word	Noun	Adjective	Verb	Adverb
gazetteer	Yes	No	No	No
dictionary	Yes	No	No	No

As nouns, dictionary is a hypernym of gazetteer; that is, dictionary is a word with a broader meaning than gazetteer:

gazetteer: a geographical dictionary (as at the back of an atlas)
dictionary: a reference book containing an alphabetical list of words with information about them

Other hypernyms of gazetteer include lexicon.

gazetteer (noun)	dictionary (noun)
a geographical dictionary (as at the back of an atlas)	a reference book containing an alphabetical list of words with information about them
a journalist who writes for a gazette