totaliser vs calculator

totaliser and calculator both are nouns.

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

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

totaliser: 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 totaliser include calculating machine.

totaliser (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)