Categorising names of years

jutfrank

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I started in 1998.

I understand that in 1998 is a prepositional phrase, so I suppose that 1998 is a noun phrase. Could someone confirm that, please?

Secondly, can 1998 be categorised as a noun even though it is not a word in the normal sense? If so, is it a proper noun? If not, what can it be called?
 

jutfrank

VIP Member
Joined
Mar 5, 2014
Member Type
English Teacher
Native Language
English
Home Country
England
Current Location
England
So do you also see 1998 as the name (proper noun) of the year, Piscean? If written out in full, does that mean we would capitalise it to Nineteen Ninety-Eight?

Also, would you capitalise the name of the century as the Twentieth Century? If not, does that suggest that it isn't a proper noun?
 
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