"Islamic" is an adjective referring to the religious denomination of Islam and anything related to it, while "Muslim" is a proper noun or adjective that identifies followers of Islam. For example, a Muslim man may commit to an Islamic culture or read Islamic texts.
Islam was founded by the prophet Muhammad in the seventh century and is primarily dictated through a religious text known as the Qur'an, or Koran. The teachings of Islam overlap with Christianity, recognizing legendary prophets such as Moses, Solomon, Abraham and Jesus. The religion's name comes from an Arabic term meaning "surrender," indicating that followers must wholly submit to the deity Allah. "Muslim" and "Islam" are both derived from the same root word "aslama."