IPA: //ˌnɪkəˈloʊdiən//
KK: /nɪkəˈloʊdiən/
A type of early movie theater where people could watch films for a small fee, usually five cents, or a jukebox that played music when a coin was inserted.
We went to the nickelodeon to watch a silent film from the 1920s.
Nickelodeon is formed from "nickel" (from the German "Nickel", a diminutive of "Nikolaus", meaning devil or goblin, referring to the metal) and "odeon" (from Greek "odeion", meaning a building for musical performances). The word originally referred to a type of theater that charged a nickel for admission, hence the combination of the two parts to describe a place associated with entertainment.
Think of 'nickel' as the small coin you need to enter a theater, and 'odeon' as a place for performances. This helps you remember that a nickelodeon is a theater where you pay a nickel to enjoy shows.
No commonly confused words.