Nomenclature is a noun that refers to the devising or choosing of names for things. 

Our word of the day comes from two Latin words. ‘nomen’ (KNOW men) which means ‘name,’ and clatura (claw TOUR ah) meaning ‘to call.’ Nomenclature has been used since the early 17th century to refer to the act of choosing a name. 

Cindy’s Nomenclature when it comes to naming her menagerie of pets can get pretty silly. She’s used up so many names for her cats that she’s started to name a few cats after some of her dogs.