Epithet noun – A descriptive or familiar name given instead of or in addition to the one belonging to an individual. Names is a synonym for epithet. In some cases you can replace term "Names" with "Epithet", this nouns are similar.
Names noun – Verbal abuse; a crude substitute for argument. Epithet is a synonym for names in someone topic. You can use "Epithet" instead a noun "Names".
Giantish last names (at least) are clearly mostly of the Earn Your Title or epithet variety rather than inherited, as Honninscrave and Seadreamer are actually brothers.
All the House of Finwë have a fair share of names for that matter (father name + mother name + Sindarin name + Old English name...not to mention a standard epithet, ex, Caranthir the Dark or Celegorm the Fair).