calculator vs actuary

calculator and actuary both are nouns.

Word	Noun	Adjective	Verb	Adverb
calculator	Yes	No	No	No
actuary	Yes	No	No	No

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

calculator: an expert at calculation (or at operating calculating machines)
actuary: someone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums)

Other hyponyms of calculator include adder, number cruncher, statistician, subtracter.

calculator (noun)	actuary (noun)
a small machine that is used for mathematical calculations; can be mechanical or electronic	someone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums)
an expert at calculation (or at operating calculating machines)