أسامة

In a sentence

• أسامة يدرس في الجامعة.

  Osama is studying at the university.

  Here, 'أسامة' is used as a personal proper noun referring to an individual's name.

• اسم أبي أسامة.

  My father's name is Osama.

  In this sentence, 'أسامة' is still a proper noun but used specifically to identify the name in a family relationship context.

• رأيت أسامة في السوق البارحة.

  I saw Osama in the market yesterday.

  The word 'أسامة' here is used in the context of identifying a specific person in a narrative or statement about past events.