This is the 17542nd most frequent Korean word.
성준
"성준" is a Korean given name and does not have a specific meaning without context, as its meaning depends on the hanja (Chinese characters) used to write it.
Here, '성준' is used as a proper noun within a noun phrase, indicating possession, and is being described with a characteristic.
내 친구 성준은 정말 친절해요.
My friend Sungjun is really kind.
In this sentence, '성준' is a proper noun referring to a person's name, specifically used as the subject in the clause, showing nominative usage.
성준은 오늘 학교에 갔어요.
Sungjun went to school today.
In this example, '성준' occurs as a proper noun denoting the recipient of an action ('말했어요'), indicating dative usage influenced by the particle '에게'.