Believe doesn't mean anything. The Greek doesn't even have a word for believe in their language.
Pisteuo is three parts that communicate one happening.
Surrender is one of those parts. The Strong's uses the words commitment, to commit unto, be committed to, for pisteuo. I stand on the word surrender, because I have done it and know what happens.
So yes , surrender with out looking it up is no doubt another Greek word, but like i stated, pisteuo is only apart of pisteuo.
Does this help.?