diplomat vs consul

diplomat and consul both are nouns.

Word	Noun	Adjective	Verb	Adverb
diplomat	Yes	No	No	No
consul	Yes	No	No	No

As nouns, consul is a hyponym of diplomat; that is, consul is a word with a more specific, narrower meaning than diplomat:

diplomat: an official engaged in international negotiations
consul: a diplomat appointed by a government to protect its commercial interests and help its citizens in a foreign country

diplomat (noun)	consul (noun)
an official engaged in international negotiations	a diplomat appointed by a government to protect its commercial interests and help its citizens in a foreign country
a person who deals tactfully with others