analog computer vs computer

analog computer and computer both are nouns.

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

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

analog computer: a computer that represents information by variable quantities (e.g., positions or voltages)
computer: a machine for performing calculations automatically

analog computer (noun)	computer (noun)
a computer that represents information by variable quantities (e.g., positions or voltages)	a machine for performing calculations automatically
	an expert at calculation (or at operating calculating machines)