I have, its perhaps you who need to read my posts.
In Christianity, a martyr, in accordance with the meaning of the original Greek martys in the New Testament, is one who brings a testimony, usually written or verbal. In particular, the testimony is that of the Christian Gospel, or more generally, the Word of God. A Christian witness is a biblical witness whether or not death follows.[7] However, over time many Christian testimonies were rejected, and the witnesses put to death, and the word
martyrdeveloped its present sense. Where death ensues, the witnesses follow the example of
Jesusin offering up their lives for truth.
vs
The word "shahid" originates from the Qur'anic Arabic word meaning "witness", which is used in the context of "those who bear witness." Its application to Muslim martyrs originates from the context of the martyr having died in the way of
Islam and, theref
I see no difference, just replaced the word God with Allah and Gospel with the Quran.