This is the 11369th most frequent Korean word.
김진호
"김진호" is a Korean name, typically composed of the family name "Kim" and the given name "Jinho."
Here, "김진호" is used as a proper noun referring to a specific person's name.
김진호는 내 친구입니다.
Kim Jin-ho is my friend.
In this sentence, "김진호" is used as a proper noun (a name), and "씨" indicates a polite expression akin to 'Mr.' or 'Ms.' in English.
김진호 씨는 어디에 살아요?
Where does Mr. Kim Jin-ho live?
Here, "김진호" is referenced as part of a descriptor ("라는 사람") meaning "a person named Kim Jin-ho."