analogue vs digital

analogue is a noun but digital is not a noun.

Word	Noun	Adjective	Verb	Adverb
analogue	Yes	Yes	No	No
digital	No	Yes	No	No

analogue (noun)	digital (noun)
something having the property of being analogous to something else

analogue (adjective)	digital (adjective)
of a circuit or device having an output that is proportional to the input	of a circuit or device that represents magnitudes in digits
	relating to or performed with the fingers
	displaying numbers rather than scale positions