Doesn't "shutdown" work like "login"? "To shut down", "To log in" are verbs. "I will shut down my computer in 10 minutes", "Click on the key to log in". "Shut

Doesn't "shutdown" work like "login"? "To shut down", "To log in" are verbs. "I will shut down my computer in 10 minutes", "Click on the key to log in". "Shutdown" and "login" are action nouns. "The shutdown happened at midnight, two hours after the planned deadline", "A problem occurred during the login phase". If that is the case, grand-parent would be right: the correct phrase should be "if HN shut down for one month" (cfr. "after HN shutdown"). PS: obviously I am not a native English speaker.