hey, It's actually an arab name, "Charif" means in arabic " the honorable", achraf means "the most honorable" it's not a noun but it's a superlative adjective !!
Fairuz is a great name, one of the most influencal singers in the history of the arab world is named Fairuz, you can checkout her songs on Youtube, you'll be surprised !!

you have a new follower my friend, peace !!