hurry vs look sharp

hurry is a noun but look sharp is not a noun.

Word	Noun	Adjective	Verb	Adverb
hurry	Yes	No	Yes	No
look sharp	No	No	Yes	No

As verbs, hurry and look sharp are synonyms defined as:

Other synonyms of hurry include festinate, hasten, rush.

hurry (noun)	look sharp (noun)
the act of moving hurriedly and in a careless manner
overly eager speed (and possible carelessness)
a condition of urgency making it necessary to hurry