limited vs unlimited

limited is a noun but unlimited is not a noun.

Word	Noun	Adjective	Verb	Adverb
limited	Yes	Yes	No	No
unlimited	No	Yes	No	No

limited (noun)	unlimited (noun)
public transport consisting of a fast train or bus that makes only a few scheduled stops

limited (adjective)	unlimited (adjective)
small in range or scope	having no limits in range or scope
not unlimited	that cannot be entirely consumed or used up
not excessive	without reservation or exception
including only a part
mediocre
subject to limits or subjected to limits
having a specific function or scope