Salve

Salve is how you greet one person (no plural) in Latin.

if you want you can use it instead of 'hello' outside latin class to be more sophisticated at the expense of sounding like an idiot

Pueri/puellae: salve magister/magistra!

Fëanor

Fëanor, son of Finwë and Miriel, was the most glorious of the Noldor. He crafted the three Silmarils which would never be replicated due to the immense skill and mastery it took. Without him the Silmarillion would be 90% less interesting.

Fëanor did nothing wrong