Al-Qaida and Al-qaeda

Al-Qaida noun - A terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groups; has cells in more than 50 countries.

Al-qaeda and al-Qaida are semantically related. In some cases you can use "Al-qaeda" instead a noun phrase "Al-Qaida".

Al-qaeda noun - A terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groups; has cells in more than 50 countries.

Al-Qaida and al-qaeda are semantically related. You can use "Al-Qaida" instead a noun phrase "Al-qaeda".