subtracter vs computer

subtracter and computer both are nouns.

Word	Noun	Adjective	Verb	Adverb
subtracter	Yes	No	No	No
computer	Yes	No	No	No

As nouns, computer is a hypernym of subtracter; that is, computer is a word with a broader meaning than subtracter:

Other hypernyms of subtracter include calculator, estimator, figurer, reckoner.

subtracter (noun)	computer (noun)
a machine that subtracts numbers	a machine for performing calculations automatically
a person who subtracts numbers	an expert at calculation (or at operating calculating machines)