This is the 6762nd most frequent Japanese word.
ビリー
"ビリー" (Birī) is a Japanese katakana transcription of the English name "Billy."
ビリー is used as a proper noun, referring to a person's name.
昨日、友達のビリーが日本に来ました。
Yesterday, my friend Billy came to Japan.
ビリー is used again as a proper noun, referring to the same person introduced earlier.
ビリーはギターの演奏がとても得意です。
Billy is very good at playing the guitar.
ビリー is contextually used as a proper noun referring to an individual's persona in the social interaction.