Islam does not mean peace
It is common mistakes
Islam means surrender
And the teachings of Islam is not peace
He ideology of thought
And military and combat
Entirely wrong. Islam, as is often the case with many Arabic words, has a root word, in this case Salam, which means...yes you guessed it, peace but, something else which is a case with arabic, a single word can mean an entire sentence in english or many other languages and the literal translation of Islam is:
To obtain peace by submitting one's will to Allah.
This one word gives us an explanation on how to obtain peace, saying something or someone is peaceful is not enough, it is also important that we understand how to achieve that peace. And we do not submit our will to any worldly figure, or a worldly ideology, or a military force, or an economic force and so on and so forth. We submit ourselves to God, which is more than just saying "ah yeah, I'm a muslim" but that requires from us, 5 daily prayers, fasting, pilgrimage, giving money and help to the poor, obtaining education, spreading the truth, looking after the orphaned and the elderly, all these things are done and then we can say we have submitted ourselves to Allah. And in all these selfless acts, we find peace.