The issue is taking a broad concept and making it mean a very specific one instead.
(Please note I am an atheist that lived for years in a “Muslim country”. I don’t actually agree with any of the below, but understanding what words are intended to mean is important when you are surrounded by their use in 2 different contexts).
Fatwa: a Sharia law ruling by an imam
Fatwa (western): a ruling by an imam that a person is not protected by the law and therefore a target for assassination
Hijab: men and women of Islam should maintain a sense of visual propriety in order to avoid devaluing what can be seen in private.
Hijab (western): that cloth Islamic women wear on their head.
Jihad: the righteous struggles that each human faces to choose a difficult path for good reasons.
Jihad (western): a holy war of aggression against infidels