Tell me whether these are nouns or verbs: Run, Dance, Slide, Jump, Think, Book, Noah Webster, Cat, Omaha, Softness, Justice.

Run is a verb.
Dance is a verb.
Slide is a verb.
Jump is a verb.
Think is a verb.
Book is a noun.
Noah Webster is a noun.
Cat is a noun.
Omaha is a noun.
Softness is a noun.
Justice is a noun.