like vs unlike

like is a noun but unlike is not a noun.

Word	Noun	Adjective	Verb	Adverb
like	Yes	Yes	Yes	No
unlike	No	Yes	No	No

like (noun)	unlike (noun)
a kind of person
a similar kind

like (adjective)	unlike (adjective)
resembling or similar; having the same or some of the same characteristics; often used in combination	marked by dissimilarity
equal in amount or value	not equal in amount
having the same or similar characteristics
conforming in every respect

like (verb)	unlike (verb)
feel about or towards; consider, evaluate, or regard
to hope, to desire or to prefer to have something, or to do something
be fond of
find enjoyable or agreeable
want to have