totalizer vs calculator

totalizer and calculator both are nouns.

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

As nouns, calculator is a hypernym of totalizer; that is, calculator is a word with a broader meaning than totalizer:

totalizer: a calculator that performs simple arithmetic functions
calculator: a small machine that is used for mathematical calculations; can be mechanical or electronic

Other hypernyms of totalizer include calculating machine.

totalizer (noun)	calculator (noun)
a calculator that performs simple arithmetic functions	a small machine that is used for mathematical calculations; can be mechanical or electronic
computer that registers bets and divides the total amount bet among those who won	an expert at calculation (or at operating calculating machines)