This is the 4387th most frequent Japanese word.
名付け
"名付け" means "naming" or "giving a name."
This usage of 名付け highlights assigning a name derived from an admired or related person.
彼女は赤ちゃんに自分の母親の名前を名付けた。
She named the baby after her mother.
Here, 名付け is used to indicate the proposal or act of naming a particular phenomenon or concept.
その現象を『蝶効果』と名付けよう。
Let us name this phenomenon 'The Butterfly Effect'.
In this sentence, 名付け has been used to describe the act of giving a name to someone or something.