This is the 11320th most frequent Korean word.
김선영이
"김선영이" is not a standalone word but a Korean name (Kim Sun-young) with the subject marker "이" attached, meaning it refers to Kim Sun-young as the subject in a sentence.
The word '김선영이' denotes the subject of the sentence, referring to the person Kim Sun-young using an informal topic marker.
김선영이는 나의 가장 친한 친구입니다.
Kim Sun-young is my best friend.
The word '김선영이' is used as the base form prior to adding '-랑' to indicate companionship in an action with Kim Sun-young.
나는 김선영이랑 영화를 봤어요.
I watched a movie with Kim Sun-young.
The word '김선영이' serves as the subject of the sentence with a casual nominative case marker '-이'.